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Atomic Structure and Symbols

Total questions: 30

Worksheet time: 15mins

Name
Class
Date
1.

What is the chemical symbol for oxygen?

a)

O

b)

Ox

c)

Oy

d)

Og

2.

How many protons are in a carbon atom?

a)

6

b)

8

c)

12

d)

14

3.

What is the chemical name for the element with the symbol Na?

a)

Nitrogen

b)

Sodium

c)

Neon

d)

Nickel

4.

Which subatomic particle has a negative charge?

a)

Proton

b)

Neutron

c)

Electron

d)

Nucleus

5.

What is the chemical symbol for gold?

a)

Gd

b)

Au

c)

Ag

d)

Go

6.

How many electrons does a neutral atom of fluorine have?

a)

7

b)

8

c)

9

d)

10

7.

Which element has the atomic number 1?

a)

Helium

b)

Hydrogen

c)

Lithium

d)

Oxygen

8.

What is the chemical name for the element with the symbol Fe?

a)

Fluorine

b)

Iron

c)

Francium

d)

Fermium

9.

Which subatomic particle is found in the nucleus and has no charge?

a)

Proton

b)

Electron

c)

Neutron

d)

Positron

10.

What is the chemical symbol for potassium?

a)

Po

b)

K

c)

P

d)

Pt

11.

If an atom has 11 protons, what is its chemical symbol?

a)

Na

b)

N

c)

Ne

d)

Ni

12.

A neutral atom of chlorine has 17 electrons. How many protons does it have?

a)

16

b)

17

c)

18

d)

35

13.

Which element has 12 protons and what is its chemical symbol?

a)

Magnesium, Mg

b)

Manganese, Mn

c)

Mercury, Hg

d)

Molybdenum, Mo

14.

If an atom has 8 protons and 8 neutrons, what is its mass number?

a)

8

b)

16

c)

24

d)

32

15.

Which element has the same number of protons and electrons as atomic number 10?

a)

Neon

b)

Nitrogen

c)

Nickel

d)

Sodium

16.

A neutral atom of sulfur has 16 protons. How many electrons does it have?

a)

14

b)

15

c)

16

d)

17

17.

Which element has 20 protons, and what is its chemical symbol?

a)

Calcium, Ca

b)

Carbon, C

c)

Chromium, Cr

d)

Cobalt, Co

18.

If an atom has 7 protons and 8 neutrons, what is its mass number?

a)

7

b)

8

c)

14

d)

15

19.

Which element has the chemical symbol "Ag" and how many protons does it have?

a)

Gold, 79

b)

Silver, 47

c)

Argon, 18

d)

Aluminum, 13

20.

A neutral atom of phosphorus has 15 protons. How many electrons does it have?

a)

13

b)

14

c)

15

d)

16

21.

An atom has 6 protons, 6 neutrons, and 6 electrons. What is its chemical name and symbol?

a)

Nitrogen, N

b)

Carbon, C

c)

Oxygen, O

d)

Neon, Ne

22.

A neutral atom has 19 electrons and a mass number of 39. How many neutrons does it have?

a)

19

b)

20

c)

39

d)

58

23.

If an atom has 17 protons, 18 neutrons, and 17 electrons, what is its chemical symbol and mass number?

a)

Cl, 35

b)

Ar, 35

c)

Cl, 34

d)

Ar, 34

24.

A neutral atom of magnesium has a mass number of 24. How many neutrons does it have?

a)

10

b)

12

c)

24

d)

36

25.

An atom has 15 protons, 16 neutrons, and 15 electrons. What is its chemical name and mass number?

a)

Phosphorus, 31

b)

Sulfur, 31

c)

Phosphorus, 30

d)

Sulfur, 30

26.

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

a)

20

b)

40

c)

60

d)

80

27.

An atom has 26 protons, 30 neutrons, and 26 electrons. What is its chemical symbol and mass number?

a)

Fe, 56

b)

Ni, 56

c)

Fe, 52

d)

Ni, 52

28.

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

a)

10

b)

11

c)

12

d)

23

29.

If an atom has 8 protons, 8 neutrons, and 8 electrons, what is its chemical name and mass number?

a)

Oxygen, 16

b)

Oxygen, 18

c)

Neon, 18

d)

Neon, 16

30.

An atom has 14 protons, 14 neutrons, and 14 electrons. What is its chemical symbol and mass number?

a)

Si, 28

b)

S, 28

c)

Si, 14

d)

S, 14

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