| Vocab | Counting Atoms | Practice Problems | Diagrams |
|---|---|---|---|
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A process in which one or more substances are converted to one or more different substances. The new substances have different properties.
Define chemical reaction.
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two atoms
O2
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New substances with new properties are formed.
How do you know if a chemical reaction occurs?
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No because both sides of the balance are not even.
Does this image represent a balanced or unbalanced chemical reaction? Explain your answer.
**Image on slides** |
|
What comes goes into a chemical reaction.
Define reactant.
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three atoms
CO2
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When matter is conserved OR there is the same amount of matter in the reactant and the product.
Explain how the Law of Conservation of Mass is demonstrated in a chemical reaction?
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Yes because both sides of the balance are even.
Does this image represent a balanced or unbalanced chemical reaction? Explain your answer.
**Image on slides** |
|
What comes out of a chemical reaction.
Define product.
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six atoms
2 CH2
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No, because the properties were the same.
Did a chemical reaction occur when two substances were mixed and the properties of the substances before and after mixing them were the same? Explain your answer.
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There is one carbon atom and two oxygen atoms on both sides of the chemical reaction. The atoms have been rearranged.
Explain how this image represents the law of conservation of mass.
**Image on slides** |
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Atom - one specific type of particle, Molecule - multiple particles bonded together
What is the difference between an atom and a molecule?
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24 atoms
C6H12O6
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Yes, because the mass stayed the same but the other properties changed.
Did a chemical reaction occur when two substances were mixed and heated. Properties were compared before and after the reaction. The amount of mass stayed the same, but the boiling point and density changed
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There are two red atoms and four gray atoms on both sides of the equations. The atoms have been rearranged.
Explain how this image represents the law of conservation of mass.
**Image on slides** |
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Matter cannot be created or destroyed. There must be the same amount of matter BEFORE the chemical reaction as there is AFTER the chemical reaction.
Define the Law of Conservation of Matter.
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16 atoms
Fe(SO4)3
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1 - can't be undone and 2 - new substance is created.
Explain TWO reasons why fire burning and turning into ashes is an example of a chemical reaction.
|
.......
Draw your own model or image to represent the law of conservation of mass in chemical reactions.
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