1. A physical property is a property that can be observed or measured without changing the identity of the sample of matter.
2. Three physical properties of water are density, the freezing point, and an aqueous solution.
3. Because ice floats, ice is less dense then liquid water.
4. While at a huge party, I was thirsty and drank water with ice in it, and as I was drinking the water, I thought of all the water vapor around me.
5. Heterogeneous and homogeneous mixtures are different because a heterogeneous mixture is not the same, or uniform throughout, and a homogeneous mixture is uniform throughout.
6. What we will need to know is whether gasoline or water is less dense then another.
7. a. a medicine accompanied by instructions to "shake before using": colloid
b. Italian salad dressing: suspension
c. mayonnaise: colloid
d. a cola soft drink: colloid
e. an oil-based paint: solution
f. milk: colloid
8. This demonstrates that the air in the room is a colloid.
9.
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| Solution: Salt water |
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| Suspension: Coffee |
10. This is a solution because a solution is a homogeneous mixture and you can see a beam of light through the mixture and it is uniform throughout.
11. Substance: an element or a compound; a material with a uniform, definite composition and distinct properties. Ex: an element and compound
12. a. compound
b. element
c. compound
d. element
e. compound
f. compound
g. Element
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