� A chemical reaction involves the rearrangement of atoms from the reactants into new substances, also called products. ____
� The only way to prove that a change is a chemical change is to demonstrate that the new substances produced have chemical properties different from those of the reactants. ____
� A non-spontaneous reaction can be made to occur by linking it to an energy source. ____
� Reactants must collide with sufficient energy and the correct orientation for a reaction to occur. ____
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� A formula equation uses atomic symbols to describe the arrangement of atoms of the reactants to form the products in a chemical reaction. ____
� The mass, number, and types of atoms remain the same on both sides of a balanced equation. ____
� Coefficients indicating amounts of reactants and products can be adjusted to balance a chemical equation. Subscripts within a chemical formula cannot be changed. ____
� The charge must also balance in an ionic equation. ____
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� Notations in a chemical equation can indicate conditions required for a reaction to occur as well as the states of matter for the substances in the reaction. ____
� The coefficients in a balanced equation can be interpreted in terms of formula units, number of molecules, atoms, or ions, or as a mole ratio. ____
� Chemical equations may describe energy changes in a reaction. ?H indicates the energy absorbed as heat for the overall reaction. ____
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� Five basic types of chemical reactions include combustion, synthesis, decomposition, displacement, and double displacement. ____
� An activity series predicts displacement reactions. Any element on the list will displace elements below it from compounds that are in solution. ____
� Double-displacement reactions can be represented by net ionic equations indicating only the ions that are changed by the reaction. ____
