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Science Vocab Set 6

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Ion
a particle that is electrically charged (positive or negative)
compound
two or more elements that are chemically combined
molecule
the simplest structural unit of an element or compound
combustion
the process of burning a fuel to produce thermal energy
catalyst
substance that speeds up the rate of a chemical reaction
precipitate
a solid that forms from solution during a chemical reaction
Physical Change
a change of matter from one form to another without a change in chemical properties
Chemical Change
a change in which one or more substances are converted into different substances
Endothermic
energy is absorbed
Exothermic
releases energy
conductivity
the ability of an object to transfer heat or electricity to another object
malleability
ability of a solid to be hammered without shattering
Specific Heat
amount of heat required to increase the temperature of water
Reactant
a substance present at the start of a reaction
product
a chemical substance formed as a result of a chemical reaction