Chem Review Questions for Test 3

What is the mass of an electron?

• 1/2000 g

• 1/3000 g

• 1/2000 amu

• 1/3000 amu

Why are electrons excellent at being charge carriers?

• Because their charge density is high

• Because they are negatively charged

• Because they are very small

• Because their charge density is low

• Because they are very large in terms of amu

Tags

NGSS.HS-PS2-5

Electrons can be conducted through metal and Protons can't

• True

• False

Tags

NGSS.HS-PS2-5

Reduction
Electrons: ​ (a)  

Number of Hydrogens: ​ (b)  

Number of Oxygens:​ (c)  

Oxidation
Electrons: ​ (d)  

Number of Hydrogens:​ (e)  

Number of Oxygens: (The one you don't choose goes here.)

• Gain e-
• Lose e-
• Gain H
• Lose O
• Lose H
• Gain O

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Unit of charge

• Coulomb

• oxidation

• Faraday

• reduction

• amu

Mole of charge

• Coulomb

• oxidation

• Faraday

• reduction

• amu

Tags

NGSS.HS-PS2-5

gain of electrons

• Coulomb

• oxidation

• Faraday

• reduction

• amu

increase in oxidation number

• Coulomb

• oxidation

• Faraday

• reduction

• amu

What is the charge of P in K₂HPO₄?

• +5

• -5

• +2

• -3

• +1

For hydrogen peroxide (H₂O₂), the oxidation state of hydrogen is

• +1

• -1

• 0

• +2

• -2