Atoms, Elements, Molecules and Compounds

Front

What forms when two or more atoms join together?

Back

A molecule forms when two or more atoms join together.

Front

What is true about compounds and molecules?

Back

All compounds are also molecules.

Front

What is H2O most accurately described as?

Back

H2O is most accurately described as a compound.

Front

Where are electrons located in an atom?

Back

Electrons circle an atom's nucleus and have a negative charge.

Front

Are models perfect representations of the things they depict?

Back

No, models have limitations and can only effectively represent certain things.

Front

What is an atom?

Back

An atom is the smallest unit of an element that retains the properties of that element.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is the difference between a molecule and a compound?

Back

All compounds are molecules, but not all molecules are compounds. A molecule can consist of the same type of atoms.

Front

What are subatomic particles?

Back

Subatomic particles are the smaller particles that make up an atom, including protons, neutrons, and electrons.