Chemical Equations and the Law of Conservation of Matter by Monica Weaver https://padlet.com/msweaver20/CELOC Copy your notes in your ISN en-us 2016-12-02 12:49:43 UTC 2023-02-28 14:14:05 UTC hello@padlet.com Chemical Equations msweaver20 https://padlet.com/msweaver20/CELOC/wish/141357442 Chemical equations are used to represent a chemical reaction. It contains the chemical names or the chemical formulas of the substances that are involved in the reaction. An arrow is used to distinguish between the reactants and the products in the reaction. This arrow can be translated as “yields” or “makes".]]> 2016-12-02 12:52:42 UTC https://padlet.com/msweaver20/CELOC/wish/141357442 Reactants and Products msweaver20 https://padlet.com/msweaver20/CELOC/wish/141361901 Reactants are substances broken apart or combined in a chemical reaction and are located on the left side of the arrow. Products are new substances formed in a chemical reaction and are located on the right side of the arrow.

Click on the picture below for an example of reactants and products. Copy the example in your notes.

]]> 2016-12-02 13:14:39 UTC https://padlet.com/msweaver20/CELOC/wish/141361901 The Law of Conservation of Matter msweaver20 https://padlet.com/msweaver20/CELOC/wish/141362845 Law of Conservation of Matter states that the amount of matter does not change during a chemical reaction, only that the atoms are rearranged to form new substances. Another interpretation of this law is that matter can neither be created nor destroyed, but can be changed in form. Because matter is neither created nor destroyed, the total mass of the material(s) before the reaction is the same as the total mass of material(s) after the reaction.]]> 2016-12-02 13:18:45 UTC https://padlet.com/msweaver20/CELOC/wish/141362845 Balancing Chemical Equations msweaver20 https://padlet.com/msweaver20/CELOC/wish/141363299 A balanced chemical equation has the same number of each kind of atom on the reactant side as on the product side. To determine whether a chemical equation is balanced, two numbers are considered: the subscript and the coefficient. A coefficient is the number that comes before the chemical formula and indicates the number of particles that participate in the reaction. The subscript is the number written below the symbol for the element and tells the number of atoms in the element.
In order to determine whether an equation is balanced, one must

  • multiply the number in front of the chemical formula in the equation (coefficient) by the number written below the symbol for the element(s) (subscript) in the formula. If no coefficient is written, it is understood to be one. For instance, for “2H2O”, there are 4 hydrogen atoms and 2 oxygen atoms. If no subscript is written, it is understood to be 1. 
    (the 2 behind the H is supposed to be small and written at the bottom)
  • Determine if the number of each kind of atom on the left side of the arrow is equal to the number of each kind of atom on the right side of the arrow. If it is, then your equation is balanced.
]]> 2016-12-02 13:20:48 UTC https://padlet.com/msweaver20/CELOC/wish/141363299 Practice Balancing Equations msweaver20 https://padlet.com/msweaver20/CELOC/wish/141365609 For example, in the chemical equation for the reaction of water (liquid) breaking into hydrogen (gas) and oxygen (gas) as represented by the balanced chemical equation:]]> 2016-12-02 13:30:15 UTC https://padlet.com/msweaver20/CELOC/wish/141365609 Types of Chemical Reactions msweaver20 https://padlet.com/msweaver20/CELOC/wish/141425214
  • Synthesis Reaction
  • Decomposition Reaction
  • Single Replacement Reaction
  • Double Replacement Reaction
    • ]]>     2016-12-02 16:13:11 UTC https://padlet.com/msweaver20/CELOC/wish/141425214     Synthesis Reaction msweaver20 https://padlet.com/msweaver20/CELOC/wish/141435210 2016-12-02 16:42:20 UTC https://padlet.com/msweaver20/CELOC/wish/141435210 Decomposition Reaction msweaver20 https://padlet.com/msweaver20/CELOC/wish/141435846 2016-12-02 16:44:07 UTC https://padlet.com/msweaver20/CELOC/wish/141435846 Single Replacement Reaction msweaver20 https://padlet.com/msweaver20/CELOC/wish/141435905 2016-12-02 16:44:20 UTC https://padlet.com/msweaver20/CELOC/wish/141435905 Double Replacement Reaction msweaver20 https://padlet.com/msweaver20/CELOC/wish/141435952 2016-12-02 16:44:28 UTC https://padlet.com/msweaver20/CELOC/wish/141435952 Law of Conservation EdPuzzle Video msweaver20 https://padlet.com/msweaver20/CELOC/wish/141527777 The following link is for the EdPuzzle video. I has questions in it. Any question that you miss will need to be written in your ISN. Title the page "Conservation of Matter EdPuzzle questions".]]> 2016-12-03 02:35:50 UTC https://padlet.com/msweaver20/CELOC/wish/141527777 More Practice Balancing Chemical Equations msweaver20 https://padlet.com/msweaver20/CELOC/wish/141717575 Use the picture example below to show you how to balance chemical equations. It needs to be copied in your ISN.
    Once you have copied the example, you will need to work on the 3 examples on the board. Follow the steps given in your notes or the PASS Coach Book Lesson 33.]]>     2016-12-05 13:13:46 UTC https://padlet.com/msweaver20/CELOC/wish/141717575