8th Grade Science
3rd Qtr. 3rd & 4th week
SC#04 Quiz
Name: __________________
Date: ____________________
 Complete each definition using a word from the box.
emulsion winnowing
immiscible
alloy
mechanical mixture
compound
pure substance boiling
evaporation
inferences
hypothesis
concentrated
residue
filtration
non-solution
variable
dilute
concentration
distillation
saturated
desalination
1. ________________ the process of removing dissolved salts and other minerals from salt water to
produce fresh, usable water.
2. _______________- a mixture that contains the maximum amount of solute that can be completely
dissolved in a given amount of solvent at a specific temperature.
3. _______________- physical process for separating a liquid from a mixture( like salt water) or
separating liquids with different boiling points
4. ________________a measure of the amount of solute (the substance being dissolved) in a given
amount of solvent(the substance doing dissolving) or total solution
5. ________________ a solution that has a small amount of solute dissolved in a larger amount of solvent
6. ________________-any factor, traits, or condition that can exist in differing amounts or types and is
subject to change is a scientific experiment.
7. _______________a mixture that is not uniform throughout.
8. ________________ a physical process used to separate an insoluble solid from liquid
9. _______________- the solid material that remains behind after a substance or mixture gas gone through
a process of separation or a chemical reaction
10. _______________-specific type of colloid formed when two or more liquids that are normally
unmixable(immiscible), like oil or water, are forced to mix and stay together
11. ________________- a physical separation process used to separate the heavier components of a
mixture from the lighter ones with the help of wind or blowing air.
12. ________________- two or more liquids that can be mixed together in any amount to form a single,
uniform solution that does not separate into layers
13. ________________- a mixture of a metal with at least one other element (which can be another metal
or a nonmetal)
14. ________________- a combination of two or more substances in which the different components are
visibly separate and uneven distributed.
15. ______________matter made of only one type of particle (either atoms of one element or molecules of
one compound) and has a fixed composition, meaning you can’t separate it into simpler things by
physical means, like filtering or boiling; examples are pure gold (just atoms) or pure water ( just H2O
molecules
16. ______________- a substance made of two or more different elements chemically bonded (joined) in a
fixed ratio, like water ( H20) from hydrogen and oxygen, giving it new properties different from its
original elements, and it requires a chemical reaction to break apart.
Examples: water (H2O) Hydrogen + oxygen
17. _______________- physical process where liquid rapidly changes into a gas (vapor) when heated to a
specific temperature called its boiling point.
18. _______________- the process where a liquid changes into a gas or vapor without reaching its boiling
point.
19. _______________ a logical conclusion or educated guess reached by combining your direct
observation( facts gathered using your senses) with your own prior knowledge and reasoning.
20. ________________- a tentative, testable, and falsifiable prediction or explanation for an observation,
serving as ad “educated guess” that guides a scientific experiment.
21. _______________- a solution that contains a large amount of solute relative to the amount of solvent.