Atomic Mass Quiz

Which formula is used to calculate the atomic mass of an element?

• Atomic number + protons

• Mass number - protons

• Neutrons - protons

• Protons + neutrons

The atomic number of an element is 8 and it has 9 neutrons. What is the atomic mass of this element?

• 1

• 8

• 9

• 17

What is the atomic mass of an element that has 15 protons and 18 neutrons?

• 15

• 18

• 33

• 47

An element has an atomic mass of 40. It has 20 protons. How many neutrons does it have?

• 10

• 20

• 40

• 60

An element has an atomic mass of 207 and it has 82 protons. How many neutrons does it have?

• 82

• 125

• 207

• 289

What is the atomic mass of an element that has 26 protons and 30 neutrons?

• 4

• 26

• 30

• 56

The atomic number of an element is 7 and it has 8 neutrons. What is the atomic mass of this element?

• 1

• 7

• 8

• 15

What is the atomic mass of an element that has 18 protons and 22 neutrons?

• 18

• 22

• 40

• 60

An element has an atomic mass of 197. It has 79 protons. How many neutrons does it have?

• 79

• 118

• 197

• 276

The atomic mass of an element is 55 and it has 25 neutrons. How many protons does it have?

• 25

• 30

• 55

• 80