2.8 Chemistry Combo

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing the substance's identity, such as color, odor, or boiling point.

Front

Which of the following is NOT a physical property?

Back

Temperature change.

Front

What happens to particles when a solid becomes a liquid?

Back

The particles move faster and slide past each other.

Front

What is the trend in reactivity of metals on the periodic table?

Back

Reactivity increases as you move from right to left and down the periodic table.

Front

What happens to particles during freezing?

Back

Particles lose energy, slow down, and come closer together.

Front

What is boiling point?

Back

The temperature at which a liquid turns into vapor.

Front

Which method uses boiling point to separate substances?

Back

Evaporation.

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 solubility?

Back

The ability of a substance to dissolve in a solvent, such as salt in water.

Front

What happens to the temperature of a substance during a phase change?

Back

The temperature remains constant during a phase change, even though heat is added or removed.