Atomic Structure

Which of these is NOT a basic piece of an atom?

• proton
• neutron
• electron
• quantron

Which atomic particle has a negative charge?

• proton
• neutron
• electron
• all of the above

Which of these phrases best describes an atom?

• a positive nucleus surrounded by a hard negative shell
• a positive nucleus surrounded by a cloud of negative charges
• a hard sphere with postive and negative charges on the outside
• a negative nucleus surrounded by protons and neutrons

Tags

NGSS.MS-PS1-1

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

The positively charged parts of an atom are the

• protons
• electron clouds
• neutrons
• electrons

Tags

NGSS.MS-PS1-1

What part of the atom is indicated by the red sphere?

• nucleus
• electron cloud
• electrons
• 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

Atoms are neutral because they have the same number of

• protons and neutrons
• protons and electrons
• electrons and neutrons