Final Exam RGA HL Physics

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

Calculate the density of the cube.

• 2 g/cm³
• 4 g/cm³
• 6 g/cm³
• 8 g/cm³

A mass m of ice at a temperature of –5 °C is changed into water at a temperature of 50 °C.

Specific heat capacity of ice = c_i

Specific heat capacity of water = c_w

Specific latent heat of fusion of ice = L

Which expression gives the energy needed for this change to occur?

• 55 m c_w + m L

• 55 m c_i + 5 m L

• 5 m c_i + 50 m c_w + m L

• 5 m c_i + 50 m c_w + 5 m L

Which of the following is equivalent to a temperature of –100°C?

• –373 K

• –173 K

• 173 K

• 373 K

Matter that has no definite shape, but has a definite volume.

• Solid
• Liquid
• Gas

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• particles have less enthalpy

What is the phase change of a solid to a liquid?

• freezing

• melting

• evaporation

• condensation

Between which points is the temperature of the substance increasing?

• A-B only. 
• A-B, C-D, E-F
• B-C only. 
• B-C, D-E

A substance's heating curve is shown in the graph.  What is its boiling point?

• 100 C
• 60 C
• 80 C
• 20 C

What is happening to the particles in the substance between points D and E?

• Melting

• Freezing

• Vaporizing

• Sublimating