Phase Changes

Question 1

Phase Changes

Answer 1

changes in temp and/or pressure result in changes of phases

Question 2

Temprature affects..

Answer 2

how fast particles move

Question 3

Pressure affects…

Answer 3

how packed the particles are

Question 4

Phase Changes are… —– changes

Answer 4

physical changes

Question 5

Melting

Answer 5

solid -> liquid (endothermic - heat is absorbed)

Question 6

Vaporization/Evaporation

Answer 6

liquid -> Gas (endothermic - heat is absorbed)

Question 7

Sublimation

Answer 7

solid -> gas (endothermic - heat is absorbed) ex. dry ice + iodide

Question 8

Condensation

Answer 8

gas -> liquid (exothermic - release of heat)

Question 9

Freezing

Answer 9

liquid -> solid (exothermic - release of heat)

Question 10

Deposition

Answer 10

gas -> solid (exothermic - release of heat)