HOMEWORK DAY #2:

ISAS  page 23:
3. (a) Indirect because you must take into consideration the materials used to produce the filter paper, which include water.
    (b) Direct because water is being directly used to wet something.
    (c) Direct because water is being directly used and measured.
4. To "purify" water means to make it clean enough so that you are able to either wash your hands in the water, or use it for other purposes. To purify water is to get rid of all of the dirt and grime within the water and clean and filter it so that it is avaiable for use.
5. Oil-water separation, Sand filtration, Charcoal Adsorption and Filtration.
6. Oil, solids present in the liquid, and the odor, color, and appearance of the water.
7. (a) Even through all of the lengthy steps, salt remains in the water and is difficult to filter out.
    (b) To purify salt water, we would have to separate the salt from the water. This could possibly be done through some sort of process similar to the sand filtration process.

ISAS page 22:
1. Cars, lawn, and windows.
2. Drinking water and water for pets.
3. You can reduce lawn water and shower water.
4. (a) Impure water could be used to wash the windows.
    (b) It could be taken from the water that would have been used to wash the car.

BLOG RESPONSE:
1. Chemistry is the section of science that deals with the indentification of the substances of which matter is composed. Chemistry helps us to understand and make informed, logical, and real decisions which will help us later on in life.