CHAPTER 2

Question 1

inorganic compounds

Answer 1

do not contain carbon; or do contain carbon but only carbon bond elements other than hydrogen
NH3 ammonia
NaCl sodium chloride 
H2O water
CO2 carbon dioxide

Question 2

law of conservation matter

Answer 2

matter cannot be created nor destroyed; it can only change its form

Question 3

calculate the atomic mass of uranium atom with 92 protons and 143 neutrons

Answer 3

143 + 92 = 235

Question 4

how much more acidic is a ph of 5 to a ph of 7

Answer 4

100 times more acidic

Question 5

what common items are acidic

Answer 5

stomach fluid, soda, lakes affected by acid rain, rain water

Question 6

what common items are basic

Answer 6

sodium dioxide, household bleach, seawater

Question 7

first law of thermodynamics

Answer 7

just as matter can neither be created nor destroyed, energy is neither created nor destroyed
“you cant get something for nothing”

Question 8

second law of thermodynamics

Answer 8

when energy is transformed, the quantity of energy remains the same, but the ability to do work diminishes
“just cant break even”

Question 9

kinetic energy

Answer 9

the energy of motion

Question 10

potential energy

Answer 10

energy that is stored but has not been released

Question 11

what common items are neutral ph

Answer 11

pure water

Question 12

carbohydrates

Answer 12

sugars; stored energy; starch

Question 13

proteins

Answer 13

made of long chains called amino acids, enzymes and antibodies

Question 14

nucleic acids

Answer 14

organic compounds in living cells, forms DNA and RNA

Question 15

lipids

Answer 15

does not mix with water, fats, waxes, and steroids

Question 16

enzymes

Answer 16

proteins that control the rate of chemical reactions