1. A physical
property is a property that can be observed and measured without changing the
chemical makeup of the substance.
2.
Boiling
point: 100°C or 212°F.
Freezing
point: 0°C or 32°F.
Density: 1g/mL or 1g/centimeters cubed
3. Because of the fact that ice has the ability to float on the surface
of liquid water, it becomes less dense.
4. If you were in the artic, you could find a polar bear floating on an
iceberg (solid) afloat on water (liquid) and certain levels of gas would be
present in the air. (gas)
5. A heterogeneous mixture is one that is not uniform throughout. A
homogenous mixture is one that is uniform throughout.
6. You need to figure out, first, which is the most dense. And from this
information, you know what the oil will be on top because it is less dense and
automatically floats to the top.
7.
a. A
suspension
b. A
suspension
c. A colloid
d. A
solution
e. A
suspension
f. A colloid
8. Because of the Tyndall effect, the scattering of light, making the
air a colloid, because of the scattering of the light particles across the
blinds.
9. On separate paper.
10. This mixture is a colloid because of the rules applying to the
Tyndall effect. The small particles refract off of the beam of light. Though,
this mixture cannot be a solution, nor a suspension because the particles over
time settle to the bottom of the mixture.
11. A substance is an element or compound with a uniform and definite
composition, as well as distinct properties. Two examples of a substance are
H20 and NaCl.
12.
a. Compound
b. Element
c. Compound
d. Element
e. Compound
f. Compound
g. Compound
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