i am pretty sure it would be a chemical change so A
D will because water just turns from liquid to a gas by adding heat. That is a physical change. The other equations are chemical changes.
Because that's where they come from. Coal, oil, and natural gas are the products
of dead dinosaurs rotting in the ground under great pressure for millions of years.
Answer:
it is less dense than water
Explanation:
odyssey ware
In all atoms, the number of protons and the number of electrons is always the same. The number of neutrons is very roughly the same as the number of protons, but sometimes it's rather more. The number of protons in an atom is called the atomic number and it tells you what type of atom you have.
