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Chemical Reactions

Chemical Reactions. (See Chapter 10.1). Chemical Reactions. Using pp. 296-300 of A Natural Approach to Chemistry , Answer as many of the following questions as you can in the next 10 minutes!!. What is a chemical reaction ? What is a chemical equation ? What are reactants ?

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Chemical Reactions

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  1. Chemical Reactions (See Chapter 10.1)

  2. Chemical Reactions • Using pp. 296-300 of A Natural Approach to Chemistry, • Answer as many of the following questions as you can in the next • 10 minutes!!

  3. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both?

  4. Chemical reaction – the process of chemical change • What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both?

  5. Chemical equation – expression that describes the changes happening in a chemical reaction • What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both?

  6. NOT NOTES – JUST THINK • Why would we want to use chemical equations instead of writing out what happens in words?

  7. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Reactants – starting materials or substances in a chemical reaction; The things that react!!

  8. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Products – substances produced by chemical reaction The things that are made!!

  9. NOT NOTES – JUST THINK • How is this similar to products you normally think of?

  10. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? “+” separates the reactants or products from each other

  11. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? “” “changes into” “reacts to form”

  12. NOT NOTES – JUST THINK • This next one isn’t in the book. • What do you think (g), (l), (s), and (aq) stand for?

  13. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? (g) – gas (l) – liquid (s) – solid (aq) – aqueous (dissolved)

  14. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Law of Conservation of Mass – the total mass of the reactants and the total mass of the products is the same

  15. NOT NOTES – JUST THINK • WHY is the mass the same?

  16. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Law of Conservation of Mass – the total mass of the reactants and the total mass of the products is the same; Aka atoms CAN’T be created nor destroyed, just moved between molecules

  17. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Coefficient tells you how many moleculesthere are

  18. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Subscript tells you how many atoms of that element are in one molecule

  19. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Unbalanced chemical equation – chemical equation that does not satisfy LoCoM

  20. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? Balanced chemical equation – chemical equation that does satisfy LoCoM

  21. What is a chemical reaction? • What is a chemical equation? • What are reactants? • What are products? • In a chemical equation, what does a “+” mean? • In a chemical equation, what does a “” mean? • What do (g), (l), (s), and (aq) stand for? • What is the Law of Conservation of Mass? • In a chemical equation, what does a coefficient mean? • In a chemical equation, what does a subscript mean? • What is an unbalanced chemical equation? • What is a balanced chemical equation? • When balancing chemical equations, can we change coefficients, subscripts, or both? ONLY COEFFICIENTS CAN CHANGE!

  22. Laboratory • In groups of 3-4, work on the Law of Conservation of Mass Laboratory. • Wear goggles and gloves!!

  23. Homework • Work on the Chemical RxnsPractice

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