BMK1 Review

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances, often accompanied by energy changes. Example: Rust forming on iron.

Front

What is the formula for Dicarbon tetrabromide?

Back

C2Br4

Front

How many protons does an atom with atomic number 14 have?

Back

14 protons.

Front

What is the formula for Sodium Oxide?

Back

Na2O

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the density of an object with a mass of 75 grams and a volume of 50 mL?

Back

1.5 g/mL.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the significance of atomic number?

Back

The atomic number indicates the number of protons in an atom and determines the element's identity.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements chemically bond together.

Front

What is the law of conservation of mass?

Back

The law states that mass is neither created nor destroyed in a chemical reaction.