Atomic Structure

The building blocks of matter are called

• Neutrons

• Atoms

• Protons

• Electrons

Atoms are the smallest particles of an element that still have the element's ______________.

• Name

• Electrical Charge

• Properties

• Atoms

All atoms are very small, but atoms of different elements vary in ______________.

• Color

• Shape

• Elements

• Size

All of these a particles that make up all atoms, except:

• Protons

• Neutrons

• Electrons

• Morons

The _____________ is a small, dense region at the center of the atom.

• Cell

• Atom

• Nucleus

• Matter

The nucleus consists of positive protons and neutral neutrons, so it has an overall positive charge.

• True

• False

The nucleus has a negative charge.

• True

• False

The nucleus is just a tiny part of the atom, but it contains virtually all of the atom’s mass.

• True

• False

The strong nuclear force holds together protons and neutrons in the nucleus and overcomes the electric force of repulsion between ___________.

• Electrons

• Neutrons

• Atoms

• Protons

A proton is one of three main particles found in the nucleus of an atom.

• True

• False