It depends on what chemicals they are.
When water and pure potassium react, they blow up.
When magnesium is place over fire, it begins sparking and glows brightly.
Yes, energy is given off when chemicals react. Since energy can be heat or light it is also given off.
Reactants.
They are reactants.
a chemist
Hydrogen, always hydrogen when reaction acids
Chemicals React was created on 2006-06-15.
hydrogen eg:Na+HCl------>NaCl+H2
Bioluminessence. Chemicals within their bodies react and produce light.
carbon dioxide is released carbonates react with acids
The majority of chemicals can react.
No, oxygen is not given off when group 1 elements react with water. Instead, these reactions typically result in the formation of hydroxide ions and hydrogen gas.
well chemicals are different and most react differently. it depends on the chemical, really.