Atomic Structure

Which of the following particles has the smallest mass?

• neutron

• proton

• nucleus

• electron

What is true about an atom?

• Most of the space in an atom is taken up by the nucleus

• Atoms are mostly empty space

• Atoms have no mass

• Electrons have much more mass that protons or neutrons.

Tags

NGSS.MS-PS1-1

Matter that is made up on only one type of atom is called

• a compound

• a subatomic particle

• an element

• water

Tags

NGSS.MS-PS1-1

The term "neutral" means

• having only a little bit of charge

• having a positive charge

• having a negative charge

• having no charge at all

The atomic number identifies the number of __________.

• electrons

• atoms

• protons

• neutrons

In what part of an atom can the protons and neutrons be found?

• nucleus

• neutrine

• electron cloud

• proton cloud

Which parts of the atom move around the nucleus?

• electrons

• protons

• electrode particles

• neutrons

What charge does an electron have?

• positive

• neutral

• negative

Tags

NGSS.MS-PS2-3

What type of charge does a proton have?

• positive

• negative

• neutral

What mass does a neutron have?

• 1

• 0

• -1

• +2