Science - Atoms, Elements, Molecules and Compounds

Front

What is an atom?

Back

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

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

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 nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the difference between a molecule and a compound?

Back

All compounds are molecules, but not all molecules are compounds. Compounds consist of different elements, while molecules can consist of the same or different elements.

Front

What is the charge of a neutron?

Back

Neutrons have no charge.