Periodic Table/Atoms

Front

What is the number at the top of each square on the periodic table?

Back

Atomic number.

Front

What do elements in a group have in common?

Back

They have similar chemical properties.

Front

What does the atomic number indicate?

Back

The number of protons in an atom.

Front

What class of elements are sometimes called 'semiconductors'?

Back

Metalloids.

Front

What is the number at the bottom of each square on the periodic table?

Back

Atomic mass.

Front

What is the definition of an atom?

Back

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

Front

What are the three main subatomic particles?

Back

Protons, neutrons, and electrons.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a neutron?

Back

Neutral.