6. At the sea level,an odorless and colorless material boils at 100°C and freeze at 0°C. What inference can be drawn from this observation?
a.The material is heterogeneous
b.The material is a homogeneous mixture
c.The material is a mixture
d.The material is a pire substance
7. Sugar is heated in a test tube until it is completely changed into a black mass and droplets of water.This experiment indicates that sugar is __________.
a.An element
b.A compound
c.A heterogeneous mixture
d.A homogeneous mixture
8.Mixtures can be seperated by physical methods while pure substances cannot be seperated.Which of the following is a pure substance?
a.Air b.Ice candy c.Vinegar d.Water
9.Which is an example of a mixture
a.milk b.ice candy c.table sugar
d.sodium bicarbonate
10.Mixtures contain two or more components/substances which are physically combined. Which of the following lists of materials is composed of a mixture?
a.rock,coffee,air
b.carbon dioxide,bleach,oil
c.oxygen,salt,water
d.vinegar,70% alcohol, carbon
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1. d.The material is a pire substance
2. b.A compound
3. a. Air
4. d.sodium bicarbonate
5. b.carbon dioxide,bleach,oil
brainliest me please