basic chem

Question 1

what is chemistry

Answer 1

the study of matter

Question 2

what’s matter

Answer 2

Anything that has mass and takes up space (has a volume)”

Question 3

what’s the difference between mass and weight?

Answer 3

mass changes anytime you gain or lose
particles. weight changes whenever
mass or gravity changes

Question 4

define element

Answer 4

a pure substance that can’t be broken up

Question 5

how many unique properties does an elements have

Answer 5

approx. 115-118 (92 naturally occurring)

Question 6

define a compound

Answer 6

atoms combined to make a new substance with new properties

Question 7

example of a compound

Answer 7

Sodium Chloride (NaCl) = table salt

Question 8

what is CHON

Answer 8

carbon, hydrogen, oxygen, and nitrogen

Question 9

define periodic

Answer 9

pattern

Question 10

covalent bonding: sharing of electrons

Answer 10

sharing electrons

Question 11

ionic bonding

Answer 11

transfer electrons

Question 12

define neutrons

Answer 12

define isotopes

Question 13

define protons

Answer 13

gives atom its identity

Question 14

define electrons

Answer 14

determines bonding

Question 15

octet rule

Question 16

isotopes

Answer 16

same # of protons, diff neutrons

Question 17

what are the states of matter?

Answer 17

solid, liquid, gas

Question 18

kinetic theory

Answer 18

1. all particles are moving
2. the speed determines the substance state of matter
3. measured by temp.

Question 19

polar bonds

Answer 19

unequal sharing of electrons