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25 terms

TCA 2019 6th Science Physical/Chemical Changes

STUDY
PLAY
sublimation
a change from a solid to a gas
mellting
the temperature at which water changes from a solid to a liquid is the ______ point
contratction
a decrease in an object's volume because of a change in temperature is thermal _____
freezing
the temperature at which water changes from a liquid to a solid is its ______point
boiling
the temperature at which water changes from a liquid to a gas is the ______ point
colloid
I am smoke, cheese and foam, a mixture that doesn't settle
solvent
the water in sugar water
solute
the sugar in sugar water
alloy
steel and brass
solubility
the maximum amount of solute that can go into a solvent
distillation
using evaporation and condensation, I can separate the liquids in a mixture
mixture
a combination of 2 or more materials, but none of my parts are chemically combined
solution
can be made with solids, liquids or gases. all my parts blend so that I look the same everywhere, even under a microscope
reactants
are on the left side of a chemical equation
products
are on the right side of a chemical equation
photosynthesis
the chemical reaction that plants use to produce sugar
compound
a chemical combination of 2 or more elements
acid
tastes sour and turns litmus blue, litmus red, in water I produce H+ ions
acidity
represent the strength of an acid
alkalinity
the strength of a base
base
tastes bitter and feels soapy, in water it produces OH- ions
electrolyte
can dissolve in water to form ions, which allows it to conduct electricity
ion
have lost or gained electrons, which gives it a positive or negative charge
neutralization
can occure when acids and bases are mixed together
pH
can tell you how acidic or basic a substance is