sec 1 lesson 3 quiz 3 chapter 4

The opposite figure shows a pressure cooker, it does not allow the liquids found inside it to escape during cooking, after the cooking is finished, the high pressure of water vapour inside the cooker causes its valve to move upwards making a sound of whistle, this is why the pressure cooker is considered as a(an) ............... system.

• closed

• open

• isolated

• no correct answer

Which of the following statements is correct?

• The concept of temperature is the same concept of heat.

• The concept of temperature is the same concept of kinetic energy of matter molecules.

• Heat is a characteristic property of the substance.

• The concept of temperature represents the internal energy of matter molecules

The average kinetic energy of H₂O molecules decreases by the conversion of a certain mass of …

• Liquid water its temperature is 64°C to liquid water its temperature is 27°C

• Liquid water its temperature is 100°C to water vapour its temperature is 100°C

• Ice its temperature is -73°C to ice its temperature is -36°C

• Ice its temperature is 0°C to water its temperature is 0°C

Kilocalorie is from energy units which equals ...

• 418 J

• 4.18 J

• 4180 J

• 41.8 kJ

If two bodies have the same mass, gain the same quantity of heat, and the raise in the temperature of the second body is double that of the first, therefore the specific heat of the second body is ............... the first one.

• equal to

• double

• half

• quarter

All the following can be identified by knowing the specific heat of metals, except...

• the quantity of heat needed to raise the temperature of 10 g of a metal by 10°C.

• the quantity of heat released by cooling 10 g of a metal from 100°C to 25°C.

• Internal energy of metal.

• The gram atomic mass of the metal.

What is the quantity of heat which is released by cooling 50 g of water from 20°C to 10°C? ...

• 5 x 10² J

• 1.67 x 10⁵ J

• 2.09 x 10³ J

• 1.13 x 10⁶ J

A sample of water its mass equals 100 g, its initial temperature is 22°C, this sample acquired a quantity of heat which equals 8360 J, what is the final temperature of the sample ? ...

• 18.3°C

• 20°C

• 25.7°C

• 42°C

What is the temperature of the mixture formed of 100 g of water with temperature 15°C and 250 g of water with temperature 50°C in a supposedly isolated position? ...

• 31.4°C

• 40°C

• 44°C

• 50°C

Fuels can also be used to provide energy. Which of the following fuels does not produce energy through a chemical reaction?

• Biofuels

• Fuel cells

• Nuclear fuel

• Fossil fuel