PHYSICS ATOMIC MATTER OF MATTER

Front

What is the nucleus of an atom?

Back

The nucleus is the very small, dense center of an atom that contains protons and neutrons.

Front

What happens to an atom when it loses electrons?

Back

It becomes a positively charged ion.

Front

What is the Periodic Table?

Back

The Periodic Table is an arrangement of all known elements in order of increasing atomic number.

Front

What is an atomic number?

Back

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

Front

What is a molecule?

Back

A molecule is the smallest particle of a substance consisting of two or more atoms that bond together by sharing electrons.

Front

What is an ion?

Back

An ion is an atom or molecule that has a net electrical charge due to the loss or gain of one or more electrons.

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, with no electrical charge.

Front

What are electrons?

Back

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

Front

What is an element?

Back

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