PMA 2 Review

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

Where are electrons found in an atom?

Back

Electrons are found in the electron cloud surrounding the nucleus of an atom.

Front

Which state of matter has the largest space between molecules?

Back

Gas has the largest space between molecules compared to solids and liquids.

Front

What is a constant in an experiment?

Back

A constant is a factor that remains unchanged throughout the experiment, such as the test given to all classes.

Front

What is an outcome variable?

Back

The outcome variable is the variable that is measured or counted at the end of an experiment.

Front

What is the definition of a chemical symbol?

Back

A chemical symbol is a one or two-letter notation used to represent an element on the periodic table.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have closely packed molecules, liquids have more space between molecules, and gases have the most space between molecules.

Front

What is a hypothesis?

Back

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

Front

What is the purpose of a control group in an experiment?

Back

The control group is used as a standard for comparison, as it does not receive the experimental treatment.

Front

What is the definition of a variable in an experiment?

Back

A variable is any factor, trait, or condition that can exist in differing amounts or types.