Intro to 6th Grade Science

The lightest element
Helium
Hydrogen
Krypton
Air
This element has 4 protons
Berylliuym
Oxygen
Calcium
Potassium
The elements that don't react with other elements are called
Active
Noble
Inactive
Lonely
This element is in group 2
Lithium
Sodium
Magnesium
Boron
The 4 elements that make up most of living things are:
C, H, O, N
Fire, Water, Air, Earth
C, H, O, P
O, P, C, He
This elements has 8 electrons
N
O
Ne
Na
Of H, Na, Ca and C, the one that's a gas at room temperature.
Na
Ca
H
C
These two elements combine to make water
He and O
N and O
H and O
C and O
This is a poisonous gas
O
H
Ne
Cl
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