8th Grade Science final exam 23-24

Front

What is the smallest unit of matter?

Back

An atom.

Front

What process occurs when a candle burns?

Back

Chemical energy is transformed into light and heat.

Front

What is the dependent variable in an experiment?

Back

The variable that is measured and depends on the changes made.

Front

Which formulas contain equal numbers of nitrogen atoms?

Back

Formulas I, II, and V.

Front

What is the SI metric unit used to measure heat transfer in a solution?

Back

Degree Celsius.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a compound?

Back

A substance formed when two or more different elements are chemically bonded.

Front

What is the independent variable in an experiment?

Back

The variable that is changed or controlled to test its effects on the dependent variable.

Front

What is the definition of heat energy?

Back

The energy that comes from the temperature of matter.

Front

What is the purpose of a control in an experiment?

Back

To provide a standard for comparison.