(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.

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Presentation transcript:

(See Chapter 10.1) Chemical Reactions

Using pp 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? 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?

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? 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? Chemical equation – expression that describes the changes happening in a chemical reaction

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

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!!

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!!

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

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

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”

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

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)

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

NOT NOTES – JUST THINK WHY is the mass the same?

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

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 molecules there are

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

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

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

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!

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

Homework Work on the Chemical Rxns Practice