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enter of matter
Term | Definition |
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chemical reaction | the progress in which atoms are rearranged and chemical bonds are broken and formed to produce a chemical change of a substance |
chemical formula | a combination of chemical reactions |
chemical equation | a representation of a chemical reaction that uses symbols to show the relationship between the reactants and the products |
reactant | a substance that participates in a chemical reaction |
product | a substance that forms in a in a chemical reaction |
law of conservation of mass | the law that states that energy cannot be created or destroyed but can be changed from one form to another |
endothermic reaction | a chemical reaction that requires energy input , usually as heat |
exothermic reaction | a chemical reaction in which energy is released to the surroundings ,usually as heat |
law of conservation of energy | the law that states that energy cannot be created or destroyed |
organic compound | a covalently bonded compound that contains carbon |
hydrocarbon | an organic compound composed only of carbon and hydrogen |
organic acid | an organic chemical compound the contains one or more |