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Exothermic chemical reactions release energy in the form of heat and sometimes light. A common example would be the combustion (oxidation) of methane*:
Methane: CH4 + 2O2 -----> CO2 + 2H2O + Energy (heat and light)
* The combustion of methane (natural gas) is commonly used to heat water, cook, and to heat homes.
Wiki User
∙ 12y ago
Wiki User
∙ 9y agoAn chemical reaction that gives off heat is an exothermic reaction. In this reaction energy is released, typically in the form of light or heat energy.
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Which kind of change produces bubbles?
chemical
A chemical change produces a different kind of matter?
a chemical change proude a different kind of matter
What kind of energy produces heat because of many subatomic particles that are moving around in the air?
kinetic energy
Why is rusting a chemical change?
Rusting is a reaction which combines molecules to form other molecules: metal + oxygen -> rust. The definition of a chemical reaction is molecules turning into other molecules, so rusting is a chemical reaction.
A wood log burning in a fireplace what kind of energy is taking place?
Stored Chemical energy being converted to, and released as Heat energy.
What kind of energy do you get from a lawn mower?
Chemical energy changes to heat energy, which changes to mechanical energy.
A kind of change in matter that produces a new substance?
Nuclear and Chemical changes result in new substances.
What is a kind of chemical change?
Burning wood is a chemical change because the chemical makeup changes through the addition of heat. wood + heat = ash and other gases Pretty much when one substance changes into another substance and the change is irreversible, it is a chemical change.
Which kind of change produces bubbles?
chemical
A chemical change produces a different kind of matter?
a chemical change proude a different kind of matter
What kind of energy does Gasoline Have?
The energy released from gasoline when it is used in a gasoline engine is chemical energy.
What will happen when potassium and water together what kind of changes?
When potassium metal and water are mixed, a chemical reaction occurs. This exothermic reaction produces hydrogen gas and potassium hydroxide, which dissolves in the remaining water. This reaction can be vigorous and produce light, heat and sound.
What are the energy changes in bread toaster?
The thermal energy used to toast the bread changes to chemical energy
What kind of chemical change happens when something changes color?
Chemical
If energy is not created or destroyed what happens to the light and heat of the flashlight?
energy cannot be created. Instead it changes forms of energy. the energy of a battery is chemical energy. the chemical energy from the battery changes to to electric energy when you turn it on. Then it changes again into heat and light energy. That energy will go on and change into some other kind of energy and so on forever.
What are two kind of changes in matter?
The two types are chemical and physical changes.
The burning of wood creates what kind of energy?
Energy cannot be created. (Or destroyed) Burning changes the chemical energy of the wood to heat energy and light energy.
