3330241
Questão 1
Questão
Which of the below are a compound?
Responda
-
Helium
-
Water
-
Carbon
-
Carbon Dioxide
-
CO
-
Sugar
-
Zinc
Questão 2
Questão
Which of the below is a mixture?
Responda
-
Bronze alloy
-
Sugar
-
Air
-
Salt water
-
Salt
-
Water
Questão 3
Questão
Which of the following is a heterogeneous mixture?
Responda
-
Air
-
Soil
-
Iron
-
Pizza
-
Salt Water
-
Alcohol solution
Questão 4
Questão
Which of the following are physical changes?
Responda
-
photosynthesis
-
liquid water turning into ice
-
wood burning
-
copper wire bending
-
bread baking
-
water evaporating
Questão 5
Questão
Which of the following observations would indicate a chemical reaction has occurred?
Responda
-
color change
-
temperature change
-
precipitate forms
-
gas is produced
-
mass has changed
Questão 6
Questão
If you wanted to separate sand from water, which method of separation would you use?
Responda
-
distillation
-
filtration
-
osmosis
Questão 7
Questão
If you wanted to separate alcohol from water, two liquids, which method would you use?
Responda
-
distillation
-
filtration
-
osmosis
Questão 8
Questão
Elements can be broken down into other forms of matter.
Responda
- True
- False
Questão 9
Questão
Compounds can be broken down into other substances.
Responda
- True
- False
Questão 10
Questão
Matter can be created and destroyed.
Responda
- True
- False
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