ISBS pg.50 #1-12

1) A physical property is a property that can be measured and observed without changing the chemical makeup of the substance.

2) Three physical properties of water are boiling point, melting point, and freezing point.

3) The density of solid water is less dense than the density of liquid water.

4) A setting where you might observe water as a solid, a liquid, and a gas would be somewhere where there is a lake with ice glaciers and clouds.

5) Heterogeneous and homogeneous mixtures are different because heterogeneous mixture are mixtures that are not uniform and homogeneous mixtures are mixtures that are unified throughout.

6) You need to predict which is will be more dense.

7) a. A medicine accompanied by instructions to "shake before useing" is a colloid

    b. Italian salad dressing is a suspension.

    c. mayonnaise is a solution.

    d. a cola soft drink is a solution. 

    e. an oil-based plant is a suspension. 

    f. milk is a colloid. 

8) It demonstrates that the air is a colloid because since the light it being scattered throughout the room is shows that there are little particles in the room in which the light is reflecting off of. 

9)

10) the clear, red liquid mixture would be a solution because if the beam of light passes through the mixture it means there are no tiny particles, but if there were tiny particles then the light would reflect off of them and the light would scatter throughout the mixture.

11) Substance is a uniform amd definite composition, 2 examples include elements and compounds. 

12) a. CO is a compound.

      b. Co is an element.

      c. HCl is a compound. 

      d. Mg is an element.

      e. NaHCO3 is an compound.

      f. NO is a element

      g. I2 is an element.