chem notes 9-19

Question 1

Energy is

Answer 1

the ability to do work

Question 2

thermic/thermal =

Answer 2

heat

Question 3

exothermic =

Answer 3

heat leaving system

Question 4

heat leaving system =

Answer 4

exothermic

Question 5

endothermic

Answer 5

heat entering system

Question 6

heat entering the system =

Answer 6

endothermic

Question 7

entropy =

Answer 7

disorder

Question 8

disorder =

Answer 8

entropy

Question 9

things tend to go to a (higher or lower) entropy

Answer 9

higher

Question 10

enthalpy =

Answer 10

heat content/amount of heat

Question 11

things go to a (higher or lower) enthalpy

Answer 11

lower

Question 12

heat content/amount of heat =

Answer 12

enthalpy

Question 13

law of conservation of matter

Answer 13

matter cannot be created or destroyed

Question 14

law of conservation of energy

Answer 14

energy cannot be created or destroyed

Question 15

law of conservation of charge

Answer 15

charge cannot be created or destroyed

Question 16

2 types of matter

Answer 16

substance + mixture

Question 16

Aqueous (aq)

Answer 16

in water

Question 17

substance is

Answer 17

pure

Question 18

substance classes

Answer 18

elements + compounds

Question 19

elements =

Answer 19

atoms

Question 20

mixture =

Answer 20

two or more things mixed together

Question 20

compound

Answer 20

2+ atoms bonded together

Question 21

two or more atoms bonded together

Answer 21

compound

Question 22

how can mixtures be seperated

Answer 22

physical means

Question 23

elements can't be broken down by

Answer 23

chemical means

Question 24

compounds can be broken down by

Answer 24

chemical means

Question 25

what can be broken down by chemical means

Answer 25

compounds

Question 26

homogeneous =

Answer 26

consistent throughout

Question 27

heterogeneous =

Answer 27

not consistent throughout

Question 28

consistent throughout

Answer 28

homogeneous

Question 29

not consistent throughout

Answer 29

heterogeneous