Chemistry Test

Front

Who is known for putting together the periodic table?

Back

Dmitri Mendeleev

Front

Which group of elements is known for being unreactive?

Back

Noble gases

Front

How many electrons are found in the outer shell of Alkali metals?

Back

1

Front

What is the role of electrons in an atom?

Back

Electrons act as the 'security' for the atom, balancing the positive charge of protons.

Front

What do elements in the same group of the periodic table have in common?

Back

They have the same number of electrons in their outer shell.

Front

What are the three main subatomic particles in an atom?

Back

Protons, Neutrons, and Electrons.

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What charge do electrons carry?

Back

Electrons carry a negative charge.

Front

What is the charge of neutrons?

Back

Neutrons have no charge (they are neutral).

Front

What is the atomic number of an element?

Back

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