Chemistry: The Central Science Chapter 1
Accuracy - Refers to how closely individual measurements agree with the correct value. Celsius to Fahrenheit - °C = 5/9 (°F - 32) Chemical Change/Chemical Reaction - A change in which a substance is transformed into a chemically different substance. Ex: when Hydrogen burns in air, it combines with oxygen to form H₂0 Chemical Properties - Properties which describe the way a substance may change, or *react* to form other substances. Ex: flammability Compounds - Substances composed of two or more elements; they contain two or more kinds of atoms. Composition is fixed. Ex. Water (H₂0) Density - Mass / Volume Elements - Substances which cannot be decomposed into simpler substances. On a molecular, each is composed of only one kind of atom. 118 are known.
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accuracy refers to how closely individual measurements agree with the correct value celsius to fahrenheit °c 59 °f 32 chemical changechemical reaction a change in which a substance is t
