Mass number

Mass number

9th Grade

12 Qs

quiz-placeholder

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Mass number

Mass number

Assessment

Quiz

Chemistry, Science

9th Grade

Easy

Created by

Mari-Anna Reiljan-Dillon

Used 33+ times

FREE Resource

12 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A helium atom has 2 protons. It has an atomic mass of 4. How many neutrons does it have?

2

4

6

8

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A phosphorus atom has 15 protons. It has a mass number of 31. How many neutrons does it have?

15

16

31

6

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

True or false: The mass number is the number of protons + the number of neutrons.

True

False

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A sodium atom has 11 protons. It has a mass number of 23. How many neutrons does it have?

11

23

12

5

5.

MULTIPLE SELECT QUESTION

45 sec • 1 pt

A berilium atom has 4 protons. It has a mass number of 9. How many neutrons does it have?

5

4

9

8

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A mercury atom has 80 protons. It has a mass number of 201. How many neutrons does it have?

201

121

80

281

7.

FILL IN THE BLANK QUESTION

1 min • 1 pt

A calcium atom has 20 protons. It has a mass number of 40. How many neutrons does it have?

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