20 first elements

Vocabulary practice cards for the first 20 elements in the periodic table, including chemical symbols and atomic subatomic particle compositions.

Hydrogen

H

• 1 proton

• 0 neutron

• 1 electron

Helium

He

• 2 protons

• 2 neutrons

• 2 electrons

Lithium

Li

• 3 protons

• 4 neutrons

• 3 electrons

Beryllium

Be

• 4 protons

• 5 neutrons

• 4 electrons

Boron

B

• 5 protons

• 6 neutrons

• 5 electrons

Carbon

C

• 6 protons

• 6 neutrons

• 6 electrons

Nitrogen

N

• 7 protons

• 7 neutrons

• 7 electrons

Oxygen

O

• 8 protons

• 8 neutrons

• 8 electrons

Fluorine

F

• 9 protons

• 10 neutrons

• 9 electrons

Neon

Ne

• 10 protons

• 10 neutrons

• 10 electrons

Sodium

Na

• 11 protons

• 12 neutrons

• 11 electrons

Magnesium

Mg

• 12 protons

• 12 neutrons

• 12 electrons

Aluminium

Al

• 13 protons

• 14 neutrons

• 13 electrons

Silicon

Si

• 14 protons

• 14 neutrons

• 14 electrons

Phosphorus

P

• 15 protons

• 16 neutrons

• 15 electrons

Sulphur

S

• 16 protons

• 16 neutrons

• 16 electrons

Chlorine

Cl

• 17 protons

• 18 neutrons

• 17 electrons

Argon

Ar

• 18 protons

• 22 neutrons

• 18 electrons

Potassium

K

• 19 protons

• 20 neutrons

• 19 electrons

Calcium

Ca

• 20 protons

• 20 neutrons

• 20 electrons