HN Midterm Review #1

Front

What is the name of the acid represented by the formula HCl?

Back

Hydrochloric acid

Front

Which of the following is a heterogeneous mixture? (Options: brass, sand, Kool-aid, vanilla yogurt)

Back

Sand

Front

Is flammability an example of a physical or chemical property?

Back

Chemical property

Front

Which of the following is NOT an example of chemical change? (Options: Milk turning sour, Burning wood, Breaking a pencil, Metal turning rusty)

Back

Breaking a pencil

Front

What is considered the simplest form of matter? (Options: Compounds, Colloids, Solutions, Elements)

Back

Elements

Front

Define a heterogeneous mixture.

Back

A mixture in which the components are not uniformly distributed and can be easily distinguished.

Front

What is a chemical property?

Back

A characteristic of a substance that can only be observed during a chemical reaction.

Front

Give an example of a chemical change.

Back

Burning wood.

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 an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.