Answer:
Calcium reacts with Oxygen to form Calcium Oxide
Explanation:
Reactant: Calcium reacts with Oxygen to form Calcium Oxide
Products: Calcium + Oxygen
Chemical equation: Ca + 02> CaO
Decomposition
First, you have one compound, then they break up, or decompose, into two compounds.
Combination.
Decomposition.
Single displacement.
Double displacement.
Combustion.
Redox.
earth I think like that because earth is the second planet