Atoms and Periodic Table

Protons have a ____ charge.

• positive

• negative

• neutral

Electrons have a ____ charge.

• positive

• negative

• neutral

Neutrons have a ____ charge.

• positive

• negative

• neutral

Which two subatomic particles are found in an atom's nucleus?

• protons

• electrons

• neutrons

The atomic number is the number of ____ in an element.

• protons

• neutrons

• electrons

• ions

The difference between one element and another, is the number of _____ in the atoms.

• protons

• electrons

• neutrons

• ions

The __________ table has all known elements listed by atomic number.

• periodic

• perpendicular

• penguin

• pesky

Electrons are found in ...

• the electron cloud

• the electron stream

• the electric avenue