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ScienceTest Unit 2+3

QuestionAnswer
Compound two or more different atoms banded together
Chemical Formula uses chemical symbols to represent the atoms of the element and their ratios in a chemical compound
ionic bonds the electric attractions between positive and negative ions
covalent bonds the bond between two atoms sharing electrons
Chemical reactions the process by which chemical change occurs
reactants the substance present at the beginning of a chemical reaction they are broken bonds
products the substances formed by a chemical reaction they form bonds
the law of conversation of mass atoms are not created or destroyed in a chemical reaction
coefficient it indicates how many molecules take part in the reaction Ex: 2H2O
Exothermic reaction a reaction in which energy is released
Endothermic reaction a reaction in which energy is absorbed
Created by: mwebster2024