Heat vs. Temperature
It's Just A Phase, Mom!
Thermodynamics
Are You
Dense?
Dense?
WILDCARD!!!!
100
This is the average kinetic energy of the molecules of a substance.
Temperature
100
Solid --> Liquid
Melting
100
1st Law of Thermodynamics
The energy of the universe can neither be created nor destroyed.
100
Using the equation for density,
mass = ____________
= Density x Volume
100
Absolute zero in Kelvin.
0K
200
What is the freezing point of water in oC?
0oC
200
Liquid-
__________ shape
__________ volume
Indefinite; Definite
200
Freezing
Exothermic
200
A golden necklace is determined to take up 220mL of space and has a mass of 4.25kg. What is the density of the necklace?
19.3 g/mL
200
K = oC + ____
273
300
What has more heat: A puddle of water at 30oC or an olympic pool of water at 25oC?
The olympic pool of water at 25oC
300
Solid <-- Gas
Deposition
300
Sublimation
Endothermic
300
DAILY DOUBLE
Six paperclips together weigh 6.60g. If the density of a paperclip is 1.05g/mL. The total volume of these paperclips is _________?
300
DAILY DOUBLE
Using the equation for density,
volume = ____________
400
The boiling point of water in Kelvin?
373K
400
(T/F) The density of substances always increases from
gas → liquid → solid
False
400
Which phase has a higher average kinetic energy: Liquid or Solid?
Liquid
400
If Evelyn's density is 2.9g/mL, and she takes up 14L of space, what is her mass?
40.6 kg OR 40,600 g
400
Name two things that can be manipulated that will lead to a change in the object's density.
Mass, Volume
500
(T/F) If the heat of a substance increases, the temperature of a substance must increase.
False
500
What phase(s) is the substance in between points D and E?
Liquid and Gas
500
If a transfer of heat occurs that cause a system to increase its kinetic energy, is the process endothermic or exothermic?
Endothermic
500
A long piece of clay has a mass of 28g. A graduated cylinder has an initial volume of 25.6mL. After the long piece of clay is dropped into the cylinder, the volume rises up to 42.2mL. What is the density of the clay?
1.69 g/mL
500
What is the melting point of the substance below?
20oC