chapter 2 and 3

Question 1

water exists on earth in three forms what are they?

Answer 1

water
liquid
gas

Question 2

true or false. water is not dense as solid than as liquid because of hydrogen bonds

Question 3

is a liquid consisting of uniform mixue of two or more substances

Answer 3

solution

Question 4

for example water, dissolving agent

Answer 4

solvent

Question 5

a substance that is dissolved (sugar,salt)

Answer 5

solute

Question 6

which water is the solvent

Answer 6

aqueous solution

Question 7

true or false. Compounds doesn’t need to be ionic to dissolve water?

Answer 7

true

Question 8

why are blood and most other biological fluids classified as aqueous solution

Answer 8

the solvent is these fluids is water

Question 9

a substance that donates hydrogen ions to solution

Answer 9

acid

Question 10

is a substance that reduces the hydrogen ion concentration of a solution.

Answer 10

base

Question 11

true or false. A person can survice for more than a few minutes if the blood pH drops to 7.0 and rises to 7.8?

Answer 11

false

Question 12

this is how a body maintains a relatively constant pH in your cells and blood. Minimizes changes in pH, they accept H+ when it is excess and donating H+ when it is depleted.

Answer 12

buffers

Question 13

carbon based molecules are called …..

Answer 13

organic compounds

Question 14

organic compounds usually contain ______ atoms in addition to _______.

Answer 14

hydrogen, in addition to carbon.

Question 15

compounds with the same formula but different structural arrangements are called

Answer 15

isomers

Question 16

methamphetamine occurs as two isomers one is addictive illegal drugs known as crack, the other is sinus medication: how can you explain these different effects

Answer 16

isomers have different structures or shapes and shape of a molecule usually determines in the body

Question 17

carbon skeletons may have double or can they ONLY have single bonds?

Answer 17

they can have double bons, which can vary in location