PMA 2 Review

Front

What is a controlled experiment?

Back

An experiment where only one variable is changed at a time to isolate its effects.

Front

How many variables can be tested in a controlled experiment?

Back

One.

Front

What is the term for combining 2 or more atoms together?

Back

Molecules.

Front

What is a physical change?

Back

A change that affects one or more physical properties of a substance without altering its chemical composition.

Front

Which of the following is NOT an example of a physical change?

Back

Sour milk.

Front

What is matter?

Back

Anything that has mass and takes up space.

Front

What is the independent variable in an experiment?

Back

The variable that is changed or controlled in a scientific experiment.

Front

What is the dependent variable in an experiment?

Back

The variable that is measured and affected in the experiment.

Front

What is a hypothesis?

Back

A proposed explanation for a phenomenon, which can be tested through experimentation.

Front

What is the scientific method?

Back

A systematic process for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge.