Chapter 11 Final Review

At the end of chemical reactions, what is the total mass of the reactants compared to the total mass of the products?

• the product is doubled
• the product is half the mass of the reactants
• the mass is the same
• the mass changes depending on the reaction

The red numbers in the image below represent ________

• subscripts
• coefficients
• I don't know, and don't want to try
• None of the answers are correct

The blue numbers in the image below represent ________

• I don't know, and don't want to try
• coefficients
• subscripts
• none of the answers are correct

The substances at the beginning of a chemical equation are called the ____

• product
• yield
• chemical symbol
• reactants

What is the right part of a chemical equation called...

H_{2 +} O₂ --> H₂O

• Reactants

• Products

• Yields

• Chemical Equation

What is the arrow in a chemical equation...

H_{2 +} O₂ --> H₂O

• Reactants

• Products

• Yields

• Chemical Equation

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__Al + __O₂--> __Al₂O₃

• 4,1 --> 2
• 4,3 --> 4
• 3,4 --> 1
• 4,3 --> 2

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂SO₃ + __KOH--> __H₂O+ __K₂SO₃

• 2,1 --> 2,1
• 1,2 --> 1,1
• 1,2 --> 1,2
• 1,2 --> 2,1

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__H₂ + __S --> __H₂S

• 1,1 --> 1
• 2,2 --> 2
• 1,2 --> 1
• 1,2 --> 2

What is the right ratio of chemicals for the BCE (Balanced Chemical Equation)?__AgNO₃ + __H₂S --> __Ag₂S+ __HNO₃

• 2,1 --> 1,2
• 1,2 --> 1,1
• 1,2 --> 1,2
• 1,2 --> 2,1