Chemistry Final Review 2025

What is the number of Neutrons in Carbon-14?

• 6

• 7

• 8

• 10

What is the number of Electrons in Carbon-14?

• 6

• 7

• 8

• 14

What is the number of Valence Electrons in 14C?

• 4

• 2

• 6

• 8

Tags

NGSS.MS-PS1-1

What is the Atomic Number of Cl?

• 17

• 18

• 35

• 16

What is the Mass Number of Chlorine-35?

• 17

• 35

• 37

• 18

What is the number of Electrons in O^2-?

• 8

• 10

• 18

• 16

Tags

NGSS.MS-PS1-1

What is the number of Valence Electrons in O^2-?

• 6

• 8

• 10

• 12

Tags

NGSS.MS-PS1-1

Which of the following correctly expresses the formula for density?

• Density = Mass / Volume

• Density = Volume / Mass

• Density = Mass x Volume

• Density = Mass + Volume

If the mass of the cube = 5.68 g and the density of aluminum = 2.70 g/cm³. What is the volume of the cube?

• 3.25 cm³

• 1.50 cm³

• 2.10 cm³

• 0.95 cm³

Iron has a few known stable isotopes. Using Iron-57, calculate the number of protons, neutrons, and electrons.

• 1. Protons: 26

  2. Neutrons: 31

  3. Electrons: 26

• 1. Protons: 26

  2. Neutrons: 31

  3. Electrons: 27

• 1. Protons: 25

  2. Neutrons: 30

  3. Electrons: 26

• 1. Protons: 25

  2. Neutrons: 30

  3. Electrons: 25

Tags

NGSS.MS-PS1-1