Specific Heat Capacity and Specific Latent Heat

When a substance's temperature is increased, we need to know its _____________________ to determine the energy required to heat it up by one degree celsius.

• Specific Heat Capacity

• Specific Latent Heat of Fusion

• Specific Latent Heat of Vaporisation

Answer explanation

Increasing temperature means that the specific heat capacity is involved.

When a given mass of a substance is being boiled off, we need to know its _____________________ to determine the energy required for the process.

• Specific Heat Capacity

• Specific Latent Heat of Fusion

• Specific Latent Heat of Vaporisation

When a given mass of a substance is being melted, we need to know its _____________________ to determine the energy required for the process.

• Specific Heat Capacity

• Specific Latent Heat of Fusion

• Specific Latent Heat of Vaporisation

It takes 4,200J to heat 1kg of water by 1 degree Celsius. How much energy does it take to raise the temperature of 200g of copper by 1°C?

Specific heat capacity of water is 4200 J/(kg °C)

Specific heat capacity of copper is 390 J/(kg °C)

(a)  

Convert 2.5 x 10⁵ J into kilojoules

(a)  

0.0098kJ into Joules

• 9.8J

• 980J

• 0.098J

• 0.98J

Water has a specific heat capacity of 4.2kJ/(kg °C).

Determine the amount of energy required to heat 1kg of water by 10 degrees celsius?

• 42000J

• 4200J

• 420kJ

• 0.42kJ

Specific Heat capacity of ice is 2093 J/(kg °C). Specific Heat capacity of water is 4200 J/(kg °C).

Same amount of heat is provided to same masses of ice and water. Which one will heat up faster?

• Ice

• water

Specific Heat capacity of ice is 2093 J/(kg °C). Specific Heat capacity of water is 4200 J/(kg °C).

Which one has the weaker forces of attraction between the particles?

• Ice

• water

Using Q = ml_f, determine the energy that is required to melt 100g of ice, given that the latent heat of fusion of ice is 334 kJ/kg.

• 334kJ

• 334J

• 33400J

• 33400kJ