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Evidence of a Reaction
Counting Atoms
Conservation of Mass
Reaction Types
Balancing Equations
100
a solid substance that forms when chemicals are mixed together
What is a precipitate
100
Count the number of total atoms in this formula: NaCl
What is 2
100
the mass of the reactants equals the mass of the products in a balanced chemical equation
What is the law of conservation of mass
100
one reactant is broken up into two or more products
What is decomposition
100
What coefficients will balance this equation? Cl2 + NaBr → NaCl + Br2
What is 1, 2, 2, 1
200
The reactants are listed on this side of the arrow
What is the left side
200
Count the number of total atoms: K2O
What is 3
200
To balance an equation, which number is changed?
What is the coefficient
200
List the reaction type: Si + S8 → Si2S4
What is synthesis
200
Fe + O2 → Fe2O3
What is 4, 3, 2
300
What does the arrow mean?
What is yield or produce
300
Count the number of total atoms: (NH4)4PO4
What is 25
300
How many grams of oxygen are needed to react with 450 g of iron to produce 650 g of Fe2O3? 4Fe + 3O2 → 2Fe2O3
What is 200 g
300
a single element switch places with another element in a compound
What is single replacement
300
H2O2 → H2 + O2
What is 2, 2, 1
400
What does (aq) mean?
What is aqueous
400
Count the number of atoms: 6FeSO4
What is 36
400
If you have 700 g of reactants, how many grams of product must you have?
What is 700 g
400
Balance the equation and state the reaction type: C4H10 + O2 → CO2 + H2O
What is 2, 13, 8, 10 combustion
400
C6H6 + O2 → CO2 + H2O
What is 2, 15, 12, 6
500
four evidences that a chemical reaction has occurred
What are formation of a solid, formation of a gas, heat given off or taken in, odor
500
Count the number of atoms on the products side: H2SO4 + 2NaOH → 2H2O + Na2SO4
What is 13
500
24 g of CH4 react with 64 g of O2, producing 45 g of CO2. How many grams of water are produced?
What is 43 g
500
Balance the equation and state the reaction type: As + NaOH → Na3AsO3 + H2
What is 2, 6, 2, 3 single replacement
500
Ca3P2 + H2O → Ca(OH)2 + PH3
What is 1, 6, 3, 2