Changes in Matter - Structure of the Atom - Test Review

Which particle is neutral (no electrical charge)?

• electron
• proton
• neutron

The positively charged particle in the nucleus.

• proton
• neutron
• electron

The negatively charged particles in the cloud.

• Protons
• Neutrons
• Electrons

Tags

NGSS.MS-PS2-3

The part of an atom which contains most of its mass:

• mass number
• nucleus
• the electron cloud
• proton

The number of protons in a normal atom.

• mass number
• atomic mass
• atomic number
• atomic weight

Adding the protons and neutrons in an atom is the __________.

• volume
• mass number
• atomic number
• mass weight

The TOTAL CHARGE of a NORMAL atom is:

• electrically positive

• electrically negative

• electrically neutral

• electrically stable

What does the number of protons and neutrons in a normal atom say about the electrical charge?

• Same number of protons and neutrons = electrically neutral

• Same number of neutrons and electrons = electrically neutral

• Same number of protons and electrons = electrically neutral

• Same number of protons, neutrons and electrons = electrically neutral

The most recent description of the structure of the atom.

• The Normal Atom Model

• Van Leuuwen Model

• Electron Cloud Model
• Molecular model

Which part of the atom takes up the most space?

• electron cloud and the electrons
• nucleus and protons and neutrons
• the protons themselves