Chapter 3 Atoms; Test Review

How many grams are in 4.0 moles of Lithium? Round your answer to correct sig figs. 

• 27.76 g
• 27 g
• 27.8 g
• 28 g

A neutral subatomic particle contained in the nucleus. 

• proton
• neutron
• electron
• positron

Tags

NGSS.HS-PS1-8

A positive subatomic particle found in the nucleus

• proton
• neutron
• electron
• positron

What is the mass number?

• The average atomic mass
• the number of protons and neutrons in the nucleus
• the number of protons in the nucleus
• the number of protons and electrons in the nucleus

The mass of one mole of a substance. 

• atomic mass
• molar mass
• Avagadro's mass

Tags

NGSS.HS-PS1-7

What is the average atomic mass?

• The weighted average of all the naturally occurring isotopes.
• the same as the mass number
• the number of protons and neutrons in the nucleus
• the mass of all the electrons in an atom

The number of  particles are in one mole of a substance?

• mole number
• mass number
• molar mass
• Avagadro's number

A negative subatomic particle

• proton
• neutron
• electron
• positron

How many atoms are in 2.0 moles of oxygen? Round to correct sig figs.

• 1.2 x 10²⁴
• 1.2 x 10^-24
• 3.3 x 10^-24
• 3.3 x 10²⁴

How many neutrons does ⁶⁸Zn have

• 68
• 38
• 102
• 98