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Nothing really changed in my room for the past two years, except for bedsheets and the calendar. It has always been warm mornings with the curtains open and endless stacking of books in the background. I am grateful for what I have. ^_^

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pardon the pink, my favorite color is blue >//<

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For almost two years of remote learning, I have upgraded a lot of things in my school set-up that definitely helped me to start out this school year with ease. I have adopted methods for note-taking, to-do lists, and studying.

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this picture was taken on July 21st, my birthday !!

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Who exactly am I? That's an odd question, but in Chemistry it is important to remember names and symbols. So, dear reader, meet yours truly. ♡

My name is Audrey Yannah Z. Kasan. I have already introduced myself in the course but as a part of my interactive freedom notebook, I should formally do my introductions.

I'm a fifteen-year-old juggling her life in a balance.

To relate this so-called life of mine to Chemistry, well, I love cooking and baking. (Hence, the picture above) It's a part of me that I always cherish because we all know that things in the kitchen are magical. The different processes and steps you go through to create one heck of a dish. Pardon my language, but yes, Chemistry is a part of me and I do feel that I have a connection with it. ^_^

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Hello dearest reader !! ✫彡

This is my first academics-related entry for my interactive freedom notebook este padlet. The first week of Chemistry 1 wasn't as bad as I thought. It was actually pretty great. Since, I got to meet the Ma'am. Carren. A lot of my ates and kuyas have told me how nice of a teacher she is and how she treats her students. Right at the very start of the class, I got to feel a very energetic and jolly vibe from her. This straight away gave me a very comfortable feeling especially in encountering a new subject.

The photo above shows my typical everyday laptop screen. I know, it's chaotic but I'm very proud of the work that I accomplished during this week.

I got to write all my notes and I was able to read all the lecture materials along with the capability to answer practice questions that I did on myself to prepare for the upcoming quiz on the second week.

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if only i had really great mind powers to manipulate the problems

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Hello dearest reader ✫彡

This week wasn't exactly usual Chemistry class because we had a synchronous meeting during Friday afternoon. When usually, chemistry classes are scheduled during Mondays. Sadly, there weren't any classes at the time because of another holiday.

I was glad that we still were able to study and discuss lessons about the continuation of Stoichiometry because our class was way behind schedule. T-T

This week was all about the second part of Stoichiometry and we had to dig deeper into conversion, and ratio and proportion.

I had to bend my mind over backwards to understand the lesson but good thing Ma'am really went slow and made it really comprehensive. ^^

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Hello dearest reader !!  ✫彡

Welcome to my interactive freedom notebook. This is where I will place my weekly insights on the topics and lectures that surround our Chemistry 1 subject.

In chemistry, I believe that anything beyond the impossible is possible.

Of course, through valid and evidence-based scientific research. I'm very excited in finding out what is in stored for the upcoming weeks. ^_^

On the contrary, I do feel nervous and a bit giddy because Chemistry is a new subject that has just been introduced this school year. I expect that it will be difficult, but why not try and see, right? I might actually survive this subject and juggle the hardest parts like a resilient scholar ♡

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During the discussion, we got learn about "What is Chemistry?", a review on Matter, and Dalton's Atomic Theory. These topics were very light and I got to freshen my knowledge with Matter and the Atomic Theory since these topics were already discussed from past Integrated Science classes.

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Matter is anything that occupies space and has mass. It is everywhere around us because it is basically the so-called "stuff" of the universe. The building blocks and the particles that makeup matter are called atoms. We are matter because we made up of the different atoms and subatomic particles.

To identify matter, it is divided into two properties. Physical and Chemical Properties. Within these properties, it is subcategorized into two smaller groups: intensive and extensive.

There are three common states of matter: solid, liquid, and gas. Solid s have a definite shape and mass. liquids take up the shape of its container but has a definite mass. While, gases do not have a definite shape nor a definite mass.

Aside from the two properties and three states, there are also two classifications of matter. Matter can either be a pure substance or a mixture.

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John Dalton formulated a precise definition of the building blocks of matter we call atoms. This then was called Dalton's Atomic Theory.

This theory has four postulates:

1. All matter consists of atoms that cannot be created or destroyed.

2. Atoms of one element cannot be converted into atoms of another element.

3. Atoms of an element are identical in mass and other properties.

4. Chemical combination of a specific ratio of an atom of different elements forms a compound.

The postulates mentioned are also interconnected with the three Mass Laws:

Law of Conservation of Mass

Mass can neither be created nor destroyed in a chemical reaction.

Connected to the postulates 1 and 2

Law of Definite Composition

A given chemical compound always contains its component elements in a fixed ratio (by mass).

Connected to the postulates 3 and 4

Law of multiple proportions

Whenever the same two elements form more than one compound, the different masses of elements that combine with other elements are in the ratio of small whole numbers.

The ratio is in Small whole numbers

Connected to the postulates 1, 3, and 4

These mass laws and the postulates of Dalton’s Atomic Theory correlate with another in proving the existence of atoms and chemical reactions. This does not mean that the laws of chemistry should only focus on these laws and postulates. The proofs of disproving some of the postulates come in the recent century due to discoveries such as the existence of subatomic particles and nuclear reactions.

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Scroll to the right to see the different sections and scroll down the different sections individually to see the different entries per week ♡

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Scroll to the right to see the different sections and scroll down the different sections individually to see the different entries per week ♡

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a lil' clip of my huge periodic table that i get to use now >//<

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Hello dearest reader ✫彡

For this week, we have new discussions and new topics to study for. I checked Knowledge Hub (KHub) for the overview and I had this overwhelming feeling just by looking at new concepts I am not familiar with. I was scanning through the lecture materials and I saw formulas of different elements and compounds and all of a sudden, I said to myself, "Oh no! I might have a tough time this week because of the unfamiliar topics.

Another thing, while I was scrolling through KHub, I found these two tables or charts of cations and anions. At first, I thought, "How do you pronounce this?". I remembered calling or pronouncing cations as "ca-syons" instead of "cat-ions". The same for anions, I pronounced it as similar to 'onions' but more with an a-sound, "an-yons", instead of the right pronunciation which is "an-ions". LOL (◑_◑) !!

I really made sure that I was listening and taking note of the discussion because I knew at the end of this synchronous lecture there will be an activity.

Ma'am Carren divided the discussion into two parts; the introduction of chemical compounds (for this week) and naming these inorganic compounds (for the third week). Good thing, because I still got to read during the weekends.

I'm really glad that the "overwhelming feeling" didn't get the best of me because was still able to answer the questions and recite them.

A person once told me, "The beauty of unfamiliarity will take you places, it just takes time for you to get used to, but it will give you a new type of thrill you'd want to come back for."

I love how the flow of synchronous classes is very natural as Ma'am Carren makes sure that we all get to comprehend the lectures. ♡

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Week two comprises the Introduction to Chemical Compounds. these chemical compounds are divided into two: organic and inorganic. We focused on Inorganic Compounds; with this, during the lecture, was brought about the topic of Naming and Writing Formulas of Ionic Compounds. but before actually naming and writing the formulas, we were introduced to the basic Cations and Anions.

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Chemical compounds are classified into two: organic and inorganic. the differences between the two aren't clearly defined but organic compounds are those substances that consist of carbon atoms, while inorganic compounds do not.

In chemical compounds, we take note of the chemical formulas, which are known as symbols that represent the different compounds. These symbols are the patterns that show the different atoms present in the compound.

There are different types of formulas, we have:

Empirical Formula

Molecular Formula

Structural Formula

Lewis Electron Dot Formula

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Hello dearest reader ✫彡

Week three is actually a very fun week since I got to understand part two of the discussion very well. I was able to participate during discussions and I also was able to recite. (Yes! ♡)

I wasn't able to memorize the cations and anions totally but I was more familiar now. It helped with comprehending the lesson better.

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a representation of what i think the cations and anions do ツ

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Along with the combination of cations and anion names, Ma'am also discussed how to name Acids and Binary Molecular Compounds.

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In naming ionic compounds, one must remember that it consists of the cation name followed by the anion name. For example:

Calcium Chloride CaCl₂

Aluminum Nitrate Al(NO₃)₃

Cupric (or Copper (II)) Perchlorate Cu(ClO₄)₂

In writing formulas, there are rules to follow:
1. Start by writing the metal ion with its charge, followed by the nonmetal ion with its charge.

2. Overall compound must be electrically neutral, decide how many of each ion is needed for the positive and negative charge to cancel each other out. (or you can use the CRISSCROSS METHOD)

Lastly, in recognizing Ionic Compounds, there are two ways to recognize ionic compounds.

1. Compounds between metal and nonmetal elements are usually ionic.

Example:  CaBr2  (Ca is metal, Br is nonmetal)

2. If you recognize the formula of a polyatomic ion in a compound, the compound is ionic.

Example: NaNO3   (NO³⁻ is a polyatomic ion)

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Usually, Acids are named in a special way. An acid is a substance whose molecules yield hydrogen ions when dissolved in water. When we encounter the chemical formula for acid at this stage of the course, it will be written with H as the first element, as in HCl and H₂SO₄.

1. Acids containing anions whose names end in -ide are named by changing the -ide ending to -ic, adding the prefix hydro- to this anion name, and then following with the word acid.

2. Acids containing anions whose names end in -ate or -ite are named by changing -ate to -ic and -ite to -ous and then adding the word acid. Remember, Prefixes in the anion name are retained in the name of the acid.

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A binary molecular compound, also called a covalent compound, is usually composed of only two nonmetal elements that are bonded by a covalent bond.

The procedures used for naming binary (two-element) molecular compounds are similar to those used for naming ionic compounds:

1. The name of the element farther to the left in the periodic table (closest to the metals) is usually written first.  An exception occurs when the compound contains oxygen and chlorine, bromine, or iodine (any halogen except fluorine), in which case oxygen is written last.

2. If both elements are in the same group, the lower one is named first.

3. The name of the second element is given an -ide ending.

4. Greek prefixes are used to indicate the number of atoms of each element.

Greek prefixes:

Mono - One

Di - Two

Tri - Three

Tetra - Four

Penta -Five

Hexa - Six

Hepta - Seven

Octa - Eight

Nona - Nine

Deca - Ten

Remember, the prefix mono- is never used with the first element. When the prefix ends in a or o and the name of the second element begins with a vowel, the a or o of the prefix is often dropped.

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an extravaganza of chemistry assessments ♡ peep the pop it in the bg for stress relief -.-

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Hello dearest reader ✫彡

This week marks one month of grade 9 !! Not gonna lie, it kind of took a bit longer than I expected. Anyway, going back to what I am about to share is how light and comprehensive this week was.

Ma'am was able to discuss how to write chemical equations in a way that we all can understand and comprehend. i often commend how considerate she is whenever we try to answer the questions during classes. ♡

I got to participate, but I might've got the wrong answer. T-T But that's okay, because I got to learn from my mistakes and take that as a new perspective in learning. In writing chemical equations, at first I was skeptical about how I practiced these equations at home but as Ma'am said...

Practice makes perfect.

Thus, I will continue to practice until I get to master the topic.

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last 2 brain cells doing the work (͠◉_◉᷅ )

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me behind the screen during synch classes °.°

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Week four was a very light discussion, which I understood because teachers at school just like Ma'am, were all busy in preparing for BrACKET +++. The discussion was all about Writing Chemical Equations.

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1. Translating the statement. We first translate the chemical statement into a “skeleton” equation.
Example: Mg + O2 ➜ MgO

Note:
- dentify the reactants and products in any chemical reaction. - Convert word equations into chemical equations.
- Use the common symbols, (s), (l), (g), (aq), and → appropriately when writing a chemical reaction.

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Hello dearest reader ✫彡

Week five, it's already the month of October ! How time flies, it's already been a month and now we're onto balancing chemical equations and classifying the different types of chemical reactions.

At first I though balancing equations was going to be hard, but it wasn't that hard, as I expected. It was more centered on how you'll master calculating and making sure both reactants and products are proportionate.

Ma'am also discussed the different types of chemical reactions in such a fun way. I got to laugh at how real-life scenarios can be based off of chemical reactions. It was such a lively and active discussion. ღ

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my all-time childhood favorite character: winnie the pooh ♡

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trying to meticulously balance the chemical equations

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During the week five discussion, it was composed of Balancing Chemical Equations and the Types of Chemical Reactions.

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Steps in Balancing Equations
1. Identify the most complex substance.

2. Beginning with that substance
- choose an element(s) that appears in only one reactant and one product, if possible.
- adjust the coefficients to obtain the same number of atoms of this element(s) on both sides.

3. Balance polyatomic ions
- if present on both sides of the chemical equation as a unit.

4. Balance the remaining atoms
- usually ending with the least complex substance and using fractional coefficients if necessary.
- if a fractional coefficient has been used, multiply both sides of the equation by the denominator to obtain whole numbers for the coefficients.

5. Check your work
- count the numbers of atoms of each kind on both sides of the equation to be sure that the chemical equation is balanced.

For Example:
a. Start with the most complex substance, the one with the largest number of atoms or different types of atoms. Start with MgO.
__Mg + __O2 ➜ 1MgO
1Mg  +  __O2 ➜ 1MgO

b. End with the least complex substance, such as an element by itself.
1Mg + 1/2O2  ➜ 1MgO

c. Adjusting the coefficients. In most cases, the smallest whole-number coefficients are preferred. (Use a multiplier)
2Mg + 1O2 ➜ 2MgO  (You may omit number 1)
2Mg + O2   ➜ 2MgO

d. Checking. After balancing and adjusting the coefficients, always check that the equation is balanced.
Reactants: 2Mg + O2   ➜  Products: 2MgO

e. Specifying the states of matter. The final equation also indicates the physical state of each substance or whether it is dissolved in water.
2Mg(s) + O2 (g) ➜ 2MgO(s)

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1. Combination Reactions

- also known as a synthesis reaction
- is a reaction in which two or more substances combine to form a single new substance.

The general form of a combination reaction is:

A+B→AB

Example.
(1) 2Na(s)+Cl2(g)→2NaCl(s
(2) 2Mg(s)+O2(g)→2MgO(s)

2. Decomposition Reactions

- also known as analysis
- is a reaction in which a compound breaks down into two or simpler substances.
- most decomposition reactions require an input of energy in the form of heat, light or electricity. to split substances.

The general form of a decomposition reaction is:
AB→A+B

Example

(1) 2HgO(s)→2Hg(l)+O2(g)
(2) 2NaOH(s)→Na₂O(s)+H2O(g)

3. Single-Replacement Reactions

- is a reaction in which one element replaces a similar element (metal for metal, nonmetal for nonmetal) in a compound.
The general form of a single-replacement (also called single-displacement) reaction is:
A+BC→AC+B

Example.

(1)  Mg(s)+Cu(NO₃)₂(aq)→Mg(NO₃)₂(aq)+Cu(s)

(2)  Zn(s)+2HCl(aq)→ZnCl₂(aq)+H₂(g)

Notice in reaction (1) that Mg, a metal, replaces Cu, also a metal, in the reaction. The same goes with (2), a metal replaces a metal.

For this type of reaction, we will know whether an element can replace another element in a compound by referring to ACTIVITY SERIES, also known as REACTIVITY SERIES.

4. Double-Replacement Reactions
- is a reaction in which the positive and negative ions of two ionic compounds exchange places to form two new compounds.
- it generally occur between substances in an aqueous solution. In order for a reaction to occur, one of the products is usually a solid precipitate, a gas, or a molecular compound such as water.

The general form of a double-replacement (also called double-displacement) reaction is:
AB+CD→AD+CB

Example:
(1) 2KI(aq)+Pb(NO₃)₂(aq)→2KNO₃(aq)+PbI₂(s)

5. Combustion Reactions
- is a reaction in which a substance reacts with oxygen gas, releasing energy in the form of light and heat.
- it must involve O₂O₂ as one reactant.
- Many combustion reactions occur with a hydrocarbon

a compound made up solely of carbon and hydrogen. The products of the combustion of hydrocarbons are always carbon dioxide and water. Many hydrocarbons are used as fuel because their combustion releases a very large amount of heat energy

In general, we can represent the combustion reaction of hydrocarbons as:
C X H Y + O ₂ --> H ₂ O +CO ₂

Notice that Oxygen atoms are found in both products.

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activity series and away to easily memorize it ^^

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The reactivity series is a series of elements, in order of reactivity from highest to lowest. It is used to determine the products of single displacement reactions.

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a lil’ sneak peek to what’s going on behind the screen (ramen is yum =P)

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Hello dearest reader ✫彡

This week was isn't as scary as I thought it would be. Because I thought that stoichiometry was all complicated solving with weird and unique symbols just like Physics. But thanks to Ma'am's consideration and patience with us, she went through the topic one by one and made sure that we all understood each concept and find it easy despite confusing and new encounters of topics.

I was able to answer the seatwork given with confidence and ease. Hoping that the next parts of stoichiometry will also be this comprehensive. ☼

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This week's discussion was all about the Introduction to Stoichiometry. In Stoichiometry, Ma'am discussed how to solve for Formula Weights, Avogadro's Number and the Mole, Molar Mass, and how to interconvert Moles, to Mass, to Entities and Vice Versa.

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Interconverting moles, mass, and number of chemical entities, and vice versa.

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Stoichiometry is the area of study that examines the quantities of substances consumed and produced in chemical reactions.

The formula mass also called as formula weight of a substance is the sum of the atomic mass, also called as atomic weights of the atoms in the chemical formula of the substance.

Example:
The formula weight of sulfuric acid (H2SO4)
FW = 2(AW of Hydrogen) + (AW of Sulfur) + 4(AW of Oxygen)
FW = 2(1.0 amu) + 32.1 amu + 4(16.0 amu)
FW = 98.1 amu

In chemistry, the counting unit for numbers of atoms, ions, or molecules in a laboratory-size sample is the mole, abbreviated mol. One mole is the amount of matter that contains as many objects such as atoms, molecules, or whatever other objects we are considering. From experiments, scientists have determined this number to be  6.02x10²³. Scientists call this value Avogadro’s 6.02 * 10 ²³ number, in honor of the Italian scientist Amedeo Avogadro (1776–1856).

The mass in grams of one mole of a substance is called the molar mass. The molar mass in grams per mole of any substance is numerically equal to its formula weight in atomic mass units.

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Week eight's discussion was a continuation of Stoichiometry. We tackled the Percent Composition of Compounds, Problem Solving Involving Calculating Amounts of reactants and Products.

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the summarized equation to calculating the amounts of products and reactants in chemical reactions

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the equation to percent composition of compounds

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a lil' clip of maam carren, along w other bio and chem tchrs [omg kilig heh]

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Unfortunately, this week we weren't able to have Chemistry classes because of the Campus visit, but still a good thing because I got to see Ma'am Carren in real life >//< She's a bundle of joy even if I only got to see Ma'am for a few seconds. She's so filled with energy just like what I expected from Chemistry class.

There weren't any discussions or new topics introduced, but there was some seatwork leftover and I got to practice for the new topics in Stoichiometry for a bit. Mind-boggling, but hoping I can understand the lessons better for next week's discussion.