Hydrogen atom
Oxygen atom
Water molecule
Ice cube
An atom is smaller than a molecule. And a physical representation is the biggest of all four bc it has all of those components and more.
Answer:
i think it's hydrogen reacts to oxygen
Answer:
Explanation:
IONIC-
metal & nonmental
1st word doesn't start with "mono"
2nd word can end in "-ate or -ite" (Polyatomic ions)
May need roman numerals
Reduce charges when writing formula
COVALENT-
2 non-metals
Names uses prefixes
2nd word can end in - ide
BOTH-
2nd element is a non-metal
C. development of a liquid propulsion system is the answer