ap chem review

Question 1

work is the ______ needed to ____ something against a force

Answer 1

energy, move

Question 2

everything else around the system is called…

Answer 2

surroundings

Question 3

heat is represented by

Answer 3

q

Question 4

work is represented by

Answer 4

w

Question 5

if thermal energy is transfered from the system to surroundings then q is

Answer 5

negative

Question 6

if thermal energy is transfered from the surroundings to the system then q is

Answer 6

positive

Question 7

system

Answer 7

part of the world that you are studying

Question 8

surroundings

Answer 8

everything else around the system

Question 9

delta H is _____ for exothermic reactions

Answer 9

negative

Question 10

delta H is _____ for endothermic reactions

Answer 10

positive

Question 11

heat is always transferred from the _____ substance to the _____ one.

Answer 11

hotter, colder

Question 12

hotter particles ____ some energy and the colder particles _____ in temperature

Answer 12

lose, increases

Question 13

when hotter and colder particles _____ energy is transferred between them

Answer 13

collide

Question 14

when two substances are the same temperature they have the same _____ _____

Answer 14

kinetic energy

Question 15

the amount of energy needed to raise the temperature of one gram of a substance by one celcius is the…

Answer 15

specific heat compacity

Question 16

the measurement of the quantity of heat exchanged

Answer 16

calorimetry