Heat Curves and Phase Diagrams

In heat capacity equations, what does the triangle represent?

• Temperature

• energy

• mass

• change in

• change in temp

Tags

TX.112.43.C.13.D.

How many Joules of energy are required to make 50.0 grams of ice at 0 ^οC completely melt?

• 334 J

• 0 J

• 33,400 J

• 16,700 J

Tags

TX.112.43.C.13.D.

Specific heat of water is  4.18 J/g°C. Specific heat of wood is 1.760 J/g°C What material needs more heat energy to raise the temperature?

• Water
• Wood
• Both are same

Tags

TX.112.43.C.13.D.

In which region(s) of the heating curve would water be a liquid and a gas at the same time?

• A

• B

• C

• D

• E

Tags

TX.112.43.C.13.C.

When we add heat to a substance in the plateaus (flat part) no temperature change because

• The potential energy changes

• The kinetic energy is increasing

• The kinetic energy is decreasing

• nothing happens.

Tags

TX.112.43.C.13.C.

Water exists as a _____________ at 700 mmHg and 50 °C.

• solid
• liquid
• gas
• supercritical fluid

Tags

TX.112.43.C.13.C.

What state of matter is X?

• solid 
• liquid
• gas
• supercritical fluid

Tags

TX.112.43.C.13.C.