Gr 9 Chemistry revision

The atomic mass number is...

• The number of protons and electrons

• The number of protons and neutrons

• The number of electrons only

• The number of protons only

The amount of neutrons are ....

• always the same as the protons

• always the same as the electrons

• the mass number minus the atomic number

• the atomic nuber minus the mass number

The positive particles of an atom are 

• electrons 
• positrons 
• neutrons 
• protons 

True or False? Neutrons have a negative charge

• True
• False

What is the atomic number for an element with three protons?

• 2
• 1
• 3
• 6

A particle that moves around the nucleus is a(n)...

• Proton
• Neutron
• Electron
• Quark

Tags

NGSS.MS-PS1-1

The symbol for Carbon is

• 6
• 12.011
• C
• Ca

Tags

NGSS.MS-PS1-1

Beryllium has how many protons?

• 4
• 9.0122
• 2
• 13.0122

Tags

NGSS.MS-PS1-1

What does the nucleus consist of?

• Protons + Electrons
• Neutrons + Electrons
• Atoms
• Protons + Neutrons

Tags

NGSS.HS-PS1-8

Where are protons located in the atom?

• orbitals
• nucleus
• rings
• positive

Tags

NGSS.MS-PS1-1