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Chapter 3: Isotopes

Total questions: 6

Worksheet time: 7mins

Name
Class
Date
1.

Which sentence correctly define isotopes?

a)

Isotopes are different elements that have the same number of protons but different number of neutrons.

b)

Isotopes are atoms of the same element that have the same number of neutrons but different number of protons.

c)

Isotopes are atoms of the same element that have the same number of protons but different number of electrons.

d)

Isotopes are atoms of the same element that have the same number of protons but different number of neutrons.

2.

Isotopes of a given element undergo similar chemical reactions but have a different mass

a)

true

b)

false

3.

A sample of bromine atoms was found to consist of two isotopes. What is the atomic number of bromine?

a)

35

b)

44

c)

46

d)

80

4.

A sample of bromine atoms was found to consist of two isotopes. How many neutrons does bromine-79 have?

a)

35

b)

44

c)

46

d)

79

5.

Which of the following are isotopes?

a)

A

b)

B

c)

C

d)

D

6.

Chlorine has 2 isotopes; chlorine-35 and chlorine-37. Write down the nuclide notation for both isotopes.