Atoms

The nucleus of an atom contains which two particles?

• protons and electrons

• neutrons and electrons

• protons and neutrons

Protons have what charge?

• no charge

• positive

• negative

Electrons move in the space outside the nucleus called the?

• rings

• electron cloud

• energy levels

Atoms are mostly ______ ______?

• empty space

• full space

• negative space

What lists all the elements known to man?

• The dictionary

• google

• Periodic Table of Elements

Mass number minus ( - ) atomic number equals?

• number of electrons plus neutrons

• number of protons plus electrons

• number of protons plus neutrons

Electrons have what charge?

• positive

• no charge

• negative

Neutrons are located in what part of the atom?

• electron cloud

• center

• nucleus

True or False: The 2nd energy level can hold up to 6 electrons.

• True

• False

True or False: the 1st energy level can hold up to 2 electrons.

• True

• False