Put backing soda in a graduated cylinder or something else that has flat sides and no taper. Take a can lid that fits snuglyinside the cylinder, not over it, and drill a small hole in the center. Put the can lid into the cylinder and over the backing soda. Drip a little vinegar into the hole, and the lid should begin to rise to the top of the cylinder.
The raising of the lid represents the reaction doing work, which is mechanical energy. If you wanted to get creative, you could put something on the lid, that when it got to the top, it would ring a bell or something.
You have half answered this question for yoiurself ( produced) ; the answer is 'PRODUCTS'.
The new substance that are produced
Endothermic reaction
It is a chemical reaction. The coal (which is mostly carbon) reacts with oxygen to form carbon dioxide.
A chemical that undergoes a chemical reaction is called a reactant. The chemicals that are produced by a chemical reaction are called the products. So in a chemical reaction, reactants turn into products.
products are produced after a chemical reaction.
Fire is a chemical reaction (oxydation).
Water is created in the chemical reaction of gasoline 'oxidizing' (burning).
If the reaction is exothermic then heat is produced.
You have half answered this question for yoiurself ( produced) ; the answer is 'PRODUCTS'.
reactant elements and molecules are used in a chemical reaction, they are not mixed or combined or produced in a chemical reaction.
A product, by definition a product is produced by a chemical reaction.
the energy produced by the reaction.
Fusion is a nuclear reaction.
PRODUCTS
A gas released during a chemical reaction is a chemical change.
It is chemical and mechanical both