https://padlet.com/amartins33/nrl2h8xp752rt6vy Review for Exam en-us 2022-03-24 15:04:36 UTC 2025-05-11 19:57:06 UTC hello@padlet.com amartins33 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060170 With your group you will complete the following for each question ( writing or video format):
1. Explain what information is needed to answer the question. 
2. Provide an image/gif/ video that will help explain what the answer is asking. 
3. Provide an answer and then explain you answer]]> 2022-03-24 15:04:36 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060170 amartins33 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060172 1. Researcher - responsible for Find the information in notes, internet or google classroom to answer the question
2. Note taker - responsible for writing directly in the padlet 
3. Photographer - responsible for  Find an image/ gif/ video that explains question and  answer 
4. Task manager - responsible for keeping group on task, reading directions, time management 

Roles should be switched for each question]]> 2022-03-24 15:04:36 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060172 amartins33 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060173 10 minutes per question so please work accordingly. A timer has been provided for you so the task manager can work efficiently. Reminder to switch roles between each question. ]]> 2022-03-24 15:04:36 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112060173 xie5946 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112353411 Calculating the difference between two atom electronegativities to determine it's polar or non-polar. ]]> 2022-03-24 17:35:58 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112353411 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112356393 It's Metallic Bonding because it's formed when the valence electrons in a metal and the ions of the metals are bonding. The metals can be find on the left of the line in the periodic table. ]]> 2022-03-24 17:37:39 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112356393 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112356982 The compound that has a covalent bond is H2O because both of the elements are non- metals. ]]> 2022-03-24 17:38:02 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112356982 stro4689 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112360512 In our case K (Potassium ) is the metal and it transfers the valence electrons to help Cl (Chlorine) create 8 valence electrons. ]]> 2022-03-24 17:40:12 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112360512 dong31241 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112360743 The correct answer is C because potassium is a metallic element and chloride is a non-metallic element. Therefore, it is an ionic bond when combined. In an ionic bond, metal elements transfer or give up electrons to non-metal elements. 


]]> 2022-03-24 17:40:20 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112360743 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112368310 2022-03-24 17:44:49 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112368310 xie5946 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112370135 The molecular geometry is symmetrical allowing the bond dipoles the cancel each other out.


]]> 2022-03-24 17:45:50 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112370135 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112372919 option a 
Cl2
there are 2 chlorines atoms and they have the same electronegativity. difference between them is 0. hence, it is non polar molecule. because they have linear structure are identical.]]> 2022-03-24 17:47:00 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112372919 dong31241 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112373917 To answer the question, we need to know that ionic compounds form when metals and non-metals combine. Since the metal element (Lithium) is already provided for us, we'll just have to find the nonmetal element to make up the ionic compound. The answer is D (Br) because it's a nonmetal element (as you can see in the periodic table) and forms an ionic compound with Lithium. The other 3 elements, (K, Fe, and Kr) were all metallic elements.]]> 2022-03-24 17:47:31 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112373917 stro4689 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112380063 Li (Lithium) is a metal and we need to find a non-metal so we can give them our electrons the non-metal we decided to give electrons to was Br (Bromine) because it is a non-metal and creates a ionic bond.]]> 2022-03-24 17:50:55 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112380063 xie5946 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112384178 Water is polar (H2O), then hexane should be non-polar because they do not form a solution. ]]> 2022-03-24 17:53:10 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112384178 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112386499 Gold Is an element located on the periodic table in the group of metals(on the far left side of the periodic table). Malleability is a property of gold because gold is a metal and metals carry the characteristics or properties of being malleable and ductile. Its also because metals have free flowing electrons which make the metal more bendable ]]> 2022-03-24 17:54:25 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112386499 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112387387 Answer: A because it is symmetrical which makes it a non-polar molecule and the electronegativity difference is 0 which makes it a non polar covalent bond. ]]> 2022-03-24 17:54:57 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112387387 stro4689 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112389529 K 
2-8-8-1
Cl 
2-8-7
K would give Cl it's 1 valence electron so Cl can have 8. ]]> 2022-03-24 17:56:14 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112389529 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112390981 For this question you need to know the properties of metallic bonds.
They conduct heat and electricity very well. Because electrons flow free.

]]> 2022-03-24 17:57:04 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112390981 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112393580 A solid is an excellent conductor of electricity  because of free flowing electrons. With electrons moving around freely, an atom has to ability to perform many thing, such as conduct electricity. ]]> 2022-03-24 17:58:23 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2112393580 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114200810 Answer: B
To answer this question, we need to know that metallic bonding consists of 2 metal elements. As shown in the periodic table, Sulfur(S), Fluorine(F) and Carbon(C) were all nonmetals, therefore only Copper (Cu) is left. Copper is also a metal as you can see in the image above. ]]> 2022-03-25 17:21:39 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114200810 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114201099 Metallic bonds occurs between two metallic elements it can't occur with a non-metal and a metal or a non-metal and non-metal. An example of a metallic bond is K (Potassium) and Li (Lithium) these are both metallic. ]]> 2022-03-25 17:21:45 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114201099 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114201581 It's H-O because oxygen and hydrogen have very high difference in electronegativity]]> 2022-03-25 17:21:57 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114201581 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114209474 When potassium chloride forms potassium transfers its electrons to chloride so chloride would be able to obtain a perfect 8.]]> 2022-03-25 17:26:53 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114209474 xie5946 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114216091 In an aqueous solution, a chloride ion attracts the hydrogen end. It is a positive pole because a chloride ion is negative. (Keep in mind) Hydrogen is a positive ion, Oxygen is a negative ion. ]]> 2022-03-25 17:31:15 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114216091 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114220687 When we talk about Polar bonds we look at an element's electronegativity. We have to look at all the possible answers and find the electronegativity once we find it we find the difference. Polar bonds range from 0.5-1.6 and out of the answers HI is 0.5 while HF is 1.8, HCI is 1, and HBr is 0.8 and that makes HI the least polar. ]]> 2022-03-25 17:34:14 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114220687 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114224438 BaO is Barium Oxide. The bond this forms is a ionic bond. An ionic bond is formed when a metallic element gives electrons to nonmetallic element. Which also means valence electrons are being transferred. ]]> 2022-03-25 17:36:32 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114224438 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114225353 You can find the electonegativity by looking on table s ]]> 2022-03-25 17:37:05 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114225353 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114225772 Unlike the other options, Hydrogen Iodine(HI) has the smallest electronegativity out of the four answers]]> 2022-03-25 17:37:22 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114225772 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114228640 Solids are arranged in regular geometric patterns because the particles are tightly packed .
Answer D]]> 2022-03-25 17:39:22 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114228640 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114235073 DiIodine has 7 valence which shared would give each other a total of a 8 valence.]]> 2022-03-25 17:43:50 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114235073 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114237044 Nitrogen forms a covalent bond and share 3 electrons from each side. To total 6 electrons to share between 2 nitrogen atoms. For their to be covalent bonding so it could share electrons.

]]> 2022-03-25 17:44:53 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114237044 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114240372 Answer: A
The answer for question 18 is A. To solve this problem, we need to calculate each of the molecules to find out which one is the least polar. The electronegativity varies from polar, non-polar to ionic bond. Anything less than or equal to 0.4 will be considered non-polar. Any difference above 0.4 to 1.7 will be considered polar, and anything above 1.7 would be an ionic bond. You can find out by subtracting the 2 electronegativities of each bond. (You can find the electronegativity in Table S). That would make HI the least polar bond because it has an electronegativity of 0.5, while the others had a bigger difference of electronegativity. HF has a difference of 1.8, HCl has 1, and HBr has 0.8. (Note: Subtract the bigger electronegativity to the smaller one)]]> 2022-03-25 17:47:10 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114240372 https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114257644 CaCl2 has the highest melting point. That is because this compound is the bond of a non-metal and a metal, meaning that this is an Ionic bond, and Ionic bonds have high melting points. Ionic bonds have equal amounts of positive and negative ions, and the opposite charges have a Strong force between eachother, which gives Ionic compounds high melting points. ]]> 2022-03-25 17:59:05 UTC https://padlet.com/amartins33/nrl2h8xp752rt6vy/wish/2114257644