8th Grade Science Chemistry STAAR Review

Which of the following is the nucleus?

• A

• B

• C

• D

If B is proton, so what is D then?

(a)  

One particle in an atom is electron, which one is it?

• A

• B

• C

• D

Which of the following have their relative mass as 1?

• Proton

• Electron

• Neutron

Particles with no charge?

(a)  

What is the charge of a proton?

• Negative

• Positive

• Neutral

Which statement best describes the locations of the subatomic particles?

• The protons and electrons are found in the nucleus, while neutrons are in the cloud outside the nucleus
• The neutrons are in the nucleus, while the protons and electrons are in the cloud outside the nucleus
• The protons and neutrons are in the nucleus, while the electrons are in the cloud outside the nucleus
• The electrons and neutrons are in the nucleus, while the protons are in the cloud outside the nucleus

The mass of one proton is equal to the mass of one...

• neutron
• electron

The mass of one proton is greater than the mass of one...

• neutron
• electron

All of the mass of an atom comes from what location?

• nucleus
• electron cloud