Chemistry Benchmark Review

Front

What is a dependent variable?

Back

The dependent variable is the outcome that is measured in an experiment, which is affected by changes in the independent variable.

Front

What is energy in the context of state changes in matter?

Back

Energy is what is added to a substance to cause changes in its state, such as from solid to gas.

Front

What is density?

Back

Density is a measure of how much mass is contained in a given volume, calculated as mass divided by volume.

Front

What are the three subatomic particles?

Back

The three subatomic particles are protons (positive charge), neutrons (no charge), and electrons (negative charge).

Front

How do you calculate density?

Back

Density = Mass / Volume.

Front

What is the role of a control in an experiment?

Back

A control is a standard for comparison in an experiment, helping to isolate the effects of the independent variable.

Front

What is an independent variable?

Back

The independent variable is the factor that is changed or manipulated in an experiment.

Front

What happens to the temperature of water when a solute is dissolved?

Back

The temperature of water can change when a solute is dissolved, depending on whether the process is endothermic or exothermic.

Front

What is the scientific method?

Back

The scientific method is a systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.

Front

What is a hypothesis?

Back

A hypothesis is a testable prediction about the relationship between two or more variables.