Chapter 9 Understanding the Atom

An ________ is the smallest piece of an element

• atom

• proton

• matter

Tags

NGSS.MS-PS1-1

All atoms of an element have the same number of

• protons

• electrons

• neutrons

What is the smallest particle

• electron

• neutron

• proton

What particle has a (-) negative charge?

• proton

• neutron

• electron

Tags

NGSS.MS-PS2-3

What particle has a (+) positive charge?

• proton

• neutron

• electron

Tags

NGSS.MS-PS2-3

What particle has a (0) neutral charge?

• proton

• neutron

• electron

What is the mass of a proton

• 1

• 0

What is the mass of a electron

• 1

• 0

What is the mass of a neutron

• 1

• 0

The atomic number equals _________________

• mass of the atom

• number of protons

• number of neutrons