Chemistry First 20 Elements

Question 1

Hydrogen

Answer 1

H
Atomic Number = 1
Atomic Mass = 1

Question 2

Helium

Answer 2

He
Atomic Number = 2
Atomic Mass = 4

Question 3

Lithium

Answer 3

Li
Atomic Number = 3
Atomic Mass = 7

Question 4

Beryllium

Answer 4

Be
Atomic Number = 4
Atomic Mass = 9

Question 5

Boron

Answer 5

B
Atomic Number = 5
Atomic Mass = 11

Question 6

Carbon

Answer 6

C
Atomic Number = 6
Atomic Mass = 12

Question 7

Nitrogen

Answer 7

N
Atomic Number = 7
Atomic Mass = 14

Question 8

Oxygen

Answer 8

O
Atomic Number = 8
Atomic Mass = 16

Question 9

Florine

Answer 9

F
Atomic Number = 9
Atomic Mass = 19

Question 10

Neon

Answer 10

Ne
Atomic Number = 10
Atomic Mass = 20

Question 11

Sodium

Answer 11

Na
Atomic Number = 11
Atomic Mass = 23

Question 12

Magnesium

Answer 12

Mg
Atomic Number = 12
Atomic Mass = 24

Question 13

Aluminium

Answer 13

Al
Atomic Number = 13
Atomic Mass = 27

Question 14

Silicon

Answer 14

Si
Atomic Number = 14
Atomic Mass = 28

Question 15

Phosphorus

Answer 15

P
Atomic Number = 15
Atomic Mass = 31

Question 16

Sulphur

Answer 16

S
Atomic Number = 16
Atomic Mass = 32

Question 17

Chlorine

Answer 17

Cl
Atomic Number = 17
Atomic Mass = 35.5

Question 18

Argon

Answer 18

Ar
Atomic Number = 18
Atomic Mass = 40

Question 19

Potassium

Answer 19

K
Atomic Number = 19
Atomic Mass = 39

Question 20

Calcium

Answer 20

Ca
Atomic Number = 20
Atomic Mass = 40

Question 21

Protons have what charge?

Answer 21

Positive

Question 22

Electrons have what charge?

Answer 22

Negative

Question 23

Neutrons have what charge?

Answer 23

None.

Question 24

What element has the atomic number 1?

Answer 24

Hydrogen.

Question 25

What element has the atomic number 2?

Answer 25

Helium

Question 26

What element has the atomic number 3?

Answer 26

Lithium

Question 27

What element has the atomic number 4?

Answer 27

Beryllium

Question 28

What element has the atomic number 5?

Answer 28

Boron

Question 29

What element has the atomic number 6?

Answer 29

Carbon

Question 30

What element has the atomic number 7?

Answer 30

Nitrogen

Question 31

What element has the atomic number 8?

Answer 31

Oxygen

Question 32

What element has the atomic number 9?

Answer 32

Flourine

Question 33

What element has the atomic number 10?

Answer 33

Neon

Question 34

What element has the atomic number 11?

Answer 34

Sodium

Question 35

What element has the atomic number 12?

Answer 35

Magnesium

Question 36

What element has the atomic number 13?

Answer 36

Aluminium

Question 37

What element has the atomic number 14?

Answer 37

Silicon

Question 38

What element has the atomic number 15?

Answer 38

Phosphorous

Question 39

What element has the atomic number 16?

Answer 39

Sulphur

Question 40

What element has the atomic number 17?

Answer 40

Chlorine

Question 41

What element has the atomic number 18?

Answer 41

Argon

Question 42

What element has the atomic number 19?

Answer 42

Potassium

Question 43

What element has the atomic number 20?

Answer 43

Calcium