You are trying to reduce ethane to ethene, I am guessing. That is a very hard reaction to do... probably you will have to do a free radical halogenation on ethane to form 1-chloroethane, followed by an E2 reaction with t-butoxide or some other bulky base to form ethene. Since ethane and ethene are both gases and cheaply available from petroleum cracking, this reaction really isn't worth doing.
When the heat is generated in a reaction, those are called endothermic.
This is true.
A solvent that all the components of the reaction will dissolve into, and that won't become part of the reaction itself, would be a good solvent for a chemical reaction. This means that different reactions will require different solvents.
A chemical change involve a chemical reaction.
The product doesn't exactly provide a role in a chemical reaction, but rather is the result of the chemical reaction occuring. The chemical reaction may occur specifically to produce that product to be used, and it then serves a role in that respect, but generally products don't play a role, but are just the outcome.
When the heat is generated in a reaction, those are called endothermic.
any type of metal
organic chemistry
combustion
This is true.
The elements or molecules that participate in a chemical reaction and yield a product.
Because the density of water more than the density of organic compounds
Because of chemical reaction in the brain
water causes a chemical reaction which causes it to foam and become slippery
A solvent that all the components of the reaction will dissolve into, and that won't become part of the reaction itself, would be a good solvent for a chemical reaction. This means that different reactions will require different solvents.
It is a chemical reaction. 2HCl + Zn = ZnCl2 + H2
If something reacts with water to form a gas, it's demonstrating a chemical property. The reaction has caused it to become something new, which is a telltale sign of a chemical property.