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science vocab 3/25

all vocab for the science quiz.

TermDefinition
physical change alters the form of an object without changing what type of matter it is
sublimation the change of state directly from solid to gas
melting point the temperature which a substance melts
boiling point the temperature which a substance boils
freezing point the temperature which a substance freezes
thermal expansion increase in an object`s volume due to a change in heat
thermal contraction the decrease in an object`s volume due to a change in heat
mixture a physical combination of substances
heterogeneous mixtures that have parts you can plainly see
suspension mixtures that you can see the parts under a microscope
colloid like a suspension except the parts don`t settle
homogeneous mix sugar and water- can taste the sugar but can`t see it
solution a mixture with parts that blend so it looks the same everywhere, even under a microscope
solute smaller amount that is dissolved in a solution
solvent larger amount that dissolves in a solution
alloy a solution of metal and another solid
solubility the maximum amount of a solute that can dissolve in a solvent
distillation the process of separating liquids using evaporation and condensation
compound formed by the combination of two or more elements
chemical change occur when atoms link together in new ways to create substances
reactants chemical on the left side of a chemical equation
products the chemical on the right side of a chemical equation
tarnish when corrosion of a metal causes color change
precipitate a solid formed from the chemical reaction of some solutions
acid tastes sour, burns if you touch it
lons atoms or molecules that have gained or lost electrons
base tastes bitter, feels soapy
indicators a substance that identifies acids and bases
acidity the strength of a acid
alkalinity the strength of a base
neutralization when acids and bases react to form salt and water
electrolyte a substance that forms ions in water
Created by: csomers
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