1. PHYSICAL PROPERTY: properties that can be observed and measured without changing the chemical makeup of the substance.
2. PHYSICAL PROPERTIES OF WATER: density, freezing point, and solvent
3. The density of solid water compared to liquid water is the same. Liquid water has a 1:1 ratio of 1mL: 1 gram. It also has the ratio of 1mL: 1 centimeter3.
4. A place that would have all three states of water at the same time would be a hot spring in snowy mountains.
5. HOMOGENEOUS: these mixtures are uniform, or the same throughout. This can be represented by how the particles that are in water combine with the particles that make up the water.
HETEROGENEOUS: these mixtures are not uniform, or the same throughout. When particles are different and settle at the bottom of an area.
6. To know which layer will be on top you need to know both the liquid’s density as well as physical properties and suspension.
7. A. A medicine accompanied by instructions to “shake before using”: SUSPENSION
B. Italian salad dressing: SUSPENSION
C. Mayonnaise: COLLOID
D. A cola soft drink: SOLUTION
E. An oil-based paint: SUSPENSION
F. Milk: COLLOID
8. The air is a colloid because the rays of light are visible through the small particles in the air. This is also known as the Tyndall effect. A colloid is a mixture of small, solid particles like dust in the air.
9. A. A solution:
B. A suspension:
10. This would be classified as a colloid because the particles are so small that they can’t be seen, unless by conducting the Tyndall effect.
11. SUBSTANCE: it has a uniform and definite composition as well as distinct properties. Examples are elements and compounds.
12. A. CO: COMPOUND
B. Co: ELEMENT
C. HCl: COMPOUND
D. Mg: ELEMENT
E. NaHCO3: COMPOUND
F. NO: COMPOUND
G. I2: ELEMENT
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