Atoms and Elements Assessment

An atom is the smallest unit of matter.

• True

• False

What is the center of an atom called?

• proton

• nucleus

• cloud

• neutron

Tags

NGSS.MS-PS1-1

This subatomic particle has a positive charge.

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

This subatomic particle has a negative charge.

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

Which subatomic particles are located in the nucleus of an atom?

• protons and neutrons

• electrons and protons

• electrons and neutrons

Tags

NGSS.MS-PS1-1

An element's atomic number is the same as the number of ____________.

• protons

• neutrons

• both protons and neutrons

This subatomic particle has a neutral charge.

• proton

• neutron

• electron

Tags

NGSS.MS-PS1-1

Pure substances made up of only one type of atom.

• Elements

• Electron cloud

• Nucleus

A one or two letter abbreviation for an element on the Periodic Table.

• chemical symbol

• atomic number

• atomic weight

• element name

Tags

NGSS.MS-PS1-1

Oxygen's atomic number is 8. How many protons does one atom of Oxygen have?

• 8

• 16

• 18

• 24

Tags

NGSS.MS-PS1-1