Ch. 7 Understanding the Atom Test

An ________ is the smallest piece of an element

• atom

• proton

• matter

All atoms of an element have the same number of

• protons

• electrons

• neutrons

What particle has a (+) positive charge?

• proton

• neutron

• electron

What particle has a (0) neutral charge?

• proton

• neutron

• electron

What particle has a (-) negative charge?

• proton

• neutron

• electron

The atomic number equals _________________

• mass of the atom

• number of protons

• number of neutrons

Atoms of an element with different number of neutrons

• isotope

• ion

• radioactive

Atoms of an element with different number of electrons

• isotope

• ion

• radioactive

What is the location of a proton?

• nucleus

• electron cloud

What is the location of a neutron?

• nucleus

• electron cloud