Vocab quiz pg 42-63

Process in which atoms of one or more substances rearrange to form one or more new substances

• Chemical change

• chemical reaction

• exothermic reaction

• reactants

a change in matter in which the substances that make up the matter change into other substance with different chemical and physical properties

• Chemical change

• chemical reaction

• law of conservation of energy

• coefficients

a number placed in front of an element symbol or chemical formula in a equation

• Law of conservation of mass

• products

• coefficient

• products

the energy released when atoms form bonds

• products

• chemical potential energy

• reactants

• law of conservation of mass

more energy is released when the products form than is required to break the bonds in the reactants

• exothermic reaction

• Law of conservation of energy
• Energy is conserved only in certain reactions
• endothermic reactions

more energy is required to break the bonds of the reactants than is released when product form

• exothermic reactions

• elements

• endothermic reaction

• reactants

a substance produced by a chemical reaction

• element

• reactant

• product

• chemical

starting substance in a chemical reaction

• reactanct

• element

• chemical

• substance

law that states that energy is always transferring, but energy is not created or destroyed

• law of conservation of mass

• chemical potential energy

• law of conservation of energy

law that states that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction

• law of conservation of mass

• law of conservation of energy

• endothermic reaction

• exothermic reaction