A storage battery falls into that category. A load has to be applied to the battery before an electrical current will flow.
Yes, it is true.
you can not "create" hydrogen. you can release it from chemical bonds such as from water. to extract hydrogen from water you need to pass an electrical current through the water and capture the gas which comes out, however this is hydrogen and oxygen.
true
An electrochemical cell, which is sometimes called a battery.
there are alot of chemical mixtures that create exothermic REACTIONS, but no chemical in particular. my favorite chemical reaction is thermite. (alluminum powder, iron(ii) oxide) temperatures reach 9000 degrees!
i really don't know for sure but i think its yes
How Automotive Batteries Create Electrical CurrentAutomotive batteries create electrical current by converting chemical energy stored in the plates and the electrolyte [the Sulphuric Acid in auto batteries] to electrical energy.
enzymes helps control chemical reactions by the chemical in it called collagen when enzymes enter your body they create a chemical reactions and controls the chemical reactions you get by eating too much acids.
Salt
Yes, it is true.
Yes, it is true: all chemical reactions create new molecules of compounds.
Electrical energy out of chemical energy.
6co2
you can not "create" hydrogen. you can release it from chemical bonds such as from water. to extract hydrogen from water you need to pass an electrical current through the water and capture the gas which comes out, however this is hydrogen and oxygen.
true
When steel reacts with oxygen to create rust
Yes, temperature has an effect on the speed of the reaction. Also most chemical reactions create heat. I feel that it is not exactly correct to say that most chemical reaction create heat. That is true for exothermic reactions, which give off heat, but endothermic reactions absorb heat instead.