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General Science

Ch 3 Chemical Reactions

Chemical Change is a change that produces one or more substances that differ from the original substances.
Physical change is a change in which the appearance of a substance changes but the properties stay the same.
Chemical formula A way to write the kinds and numbers of atoms in a compound.
subscript A number in a formula that tells the number of atoms of an element in a compound.
Chemical reaction a Chemical change in which elements are combined or rearranged.
Mixture A combination of substances in which no reaction takes place.
Dissolve Breaks apart
Solute The substance that is dissolved in a solution. (sugar)
Solution Is A mixture in which one substance is dissolved in another.
Solvent The substance in which the dissolving occurs in a solution. (water)
Chemical Equation A statement that uses symbols, formulas, and numbers to stand for a chemical reaction.
Product A substance that is formed in a chemical reaction. On the right side of the yield sign (→ ).
Balance To keep the number of atoms the same on both sides of the equation.
Law of conservation of matter Matter cannot be created or destroyed in any chemical change.
Coefficient A number placed before a formula in a chemical equation.
Created by: mtrampf