Atoms, the Periodic Table, and Molecules Test 2024

Front

What does each marshmallow represent in a ball and stick model of a molecule?

Back

Each marshmallow represents an atom.

Front

What do the toothpicks represent in a ball and stick model of a molecule?

Back

The toothpicks represent chemical bonds.

Front

What happens to a helium atom if a proton is taken away?

Back

It becomes a hydrogen atom.

Front

What is the molecular formula for hydrogen peroxide?

Back

H₂O₂.

Front

How many electrons are represented in an atom if the number is 1?

Back

There is 1 electron.

Front

What is an atom?

Back

The smallest unit of matter that retains the properties of an element.

Front

What is a molecule?

Back

A group of two or more atoms bonded together.

Front

What is a chemical bond?

Back

A force that holds atoms together in a molecule.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by their atomic number, electron configuration, and recurring chemical properties.

Front

What is a proton?

Back

A positively charged particle found in the nucleus of an atom.