Chemistry Chapter 3 Practice Test

What is the average atomic mass of Neon?

• 10 amu

• 20.18 amu

• 10.18 amu

• 22.18 amu

How many protons are in Beryllium?

• 4
• 9
• 5
• 2

Tags

NGSS.MS-PS1-1

How many neutrons are in a Gold atom?

• 79
• 196
• 118
• 275

How many electrons does a Copper atom have?

• 63
• 29
• 92
• 34

Tags

NGSS.MS-PS1-1

Where is most of the mass of the atom contained?

• In the protons
• In the neutrons
• In the electron cloud
• In the nucleus

Which particle has a similar mass to a proton?

• Electron
• Neutron
• Photon
• Marble

Which atomic particle has a positive charge?

• Proton
• Neutron
• Electron

Which subatomic particle has a neutral charge?

• Proton
• Neutron
• Electron

A mole of potassium contains 6.022 x 10²³ _____.

• atoms

• formula units

• ions

• molecules

Molar mass is in units of ________.

• grams
• grams/mole
• mole
• moles/gram