Not 100% sure but I think 40 seconds
Answer:
yes the one that is circled is correct
Explanation:
Explanation:
1. neutrons
2. protons
3. protons and neutrons
4. neutrons
5. electrons
I'm not sure with 1 and 4, sorry :<
Answer:
Rise surface fall surface rise
Explanation:
Hope this helps!
H2 + O = H2O
Hydrogen is a diatomic molecule and reacts with oxygen to create Water or H2O