Chemical Changes and Reactions Review

Fizzing, foaming, and burning are all examples of

• Chemical change
• Physical change

Which of these is a result of a chemical change?

• A mixture
• A solution
• A new substance
• Melting or freezing

A combination of two or more substances that are not chemically combined

• mass

• mixture

• physical property

• solubility

a change to a substance that occurs without forming a new substance

• chemical change

• physical change

• solubility

• density

The total mass of the reactants before a chemical reaction is the same as the total mass of the products after the reaction

• states of matter

• law of conservation of mass

• density

• physical property

starting substances in a chemical reaction (left side of arrow)

• states of matter

• law of conservation of mass

• products

• reactants

The temperature of the solution dropped 18 °C and there was no color change.

• physical change

• chemical reaction

Bubbles form when two or more substances are combined ...

• Chemical Change
• Physical Change

The following is what type of reaction:
PbCl₂ + AgNO₃ → Pb(NO₃)₂ + AgCl

• Synthesis
• Decomposition
• Single Replacement
• Double Replacement

The following is what type of reaction:
NH₃ + HCl  → NH₄Cl

• Synthesis
• Decomposition
• Single Replacement Replacement
• Double Replacement Replacement