Atom Unit review #1

Front

What are isotopes?

Back

Isotopes are atoms that have the same number of protons but differ in the number of neutrons.

Front

What are the main components of an atom?

Back

An atom consists of protons, neutrons, and electrons.

Front

How many protons are in one atom of Lithium?

Back

One atom of Lithium has 3 protons.

Front

What are the horizontal rows on the periodic table called?

Back

The horizontal rows on the periodic table are known as periods.

Front

What is an example of a physical property?

Back

An example of a physical property is boiling point.

Front

What is the charge of a proton?

Back

A proton has a positive charge.

Front

What is the charge of an electron?

Back

An electron has a negative charge.

Front

What is the nucleus of an atom?

Back

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

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom.

Front

What is a chemical element?

Back

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