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(See Chapter 10.1) Chemical Reactions Slide 2 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!! Slide 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? Slide 4 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 Slide 5 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 Slide 6 NOT NOTES JUST THINK Why would we want to use chemical equations instead of writing out what happens in words? Slide 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!! Slide 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!! Slide 9 NOT NOTES JUST THINK How is this similar to products you normally think of? Slide 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 Slide 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 Slide 12 NOT NOTES JUST THINK This next one isnt in the book. What do you think (g), (l), (s), and (aq) stand for? Slide 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) Slide 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 Slide 15 NOT NOTES JUST THINK WHY is the mass the same? Slide 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 CANT be created nor destroyed, just moved between molecules Slide 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 molecules there are Slide 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 Slide 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 Slide 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 Slide 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! Slide 22 Laboratory In groups of 3-4, work on the Law of Conservation of Mass Laboratory. Wear goggles and gloves!! Slide 23 Homework Work on the Chemical Rxns Practice