Correctly represented, it's Mg + 2HCl --> MgCl2 + H2, and it's a single replacement reaction.
A chemical reaction.
A waterfall is not a chemical reaction.
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
double-displacement reaction.
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
A chemical reaction.
An exothermic reaction is one that proceeds with the evolution of heat.
Photosynthesis.
A chemical reaction is a change in which one kind of matter changes into a different kind of matter with different properties. Reactant is a substance used in a chemical reaction and a product is a substance made in a chemical reaction. Hope this is helpful! ;)
At least one change in chemical bonding.
A waterfall is a physical process, not a chemical reaction. It involves the flow of water over terrain due to gravity, and does not involve a chemical change in the water molecules themselves.
Depends on what type/kind of chemicals!!!