Understanding Specific Heat Capacity of Water

What does specific heat capacity describe?

• An object

• A substance

• A solution

• A mixture

Which of the following is NOT a quantity needed to calculate specific heat capacity?

• Volume of the substance

• Mass of the substance

• Heat supplied

• Temperature change

What is the purpose of using a polystyrene cup in the experiment?

• To measure the volume of water

• To increase heat loss

• To make the experiment more colorful

• To reduce heat loss

Why is it important to stir the water continuously during the experiment?

• To cool down the water

• To ensure uniform temperature

• To increase the water's mass

• To make the water boil

What is the calculated specific heat capacity of water in the experiment?

• 5000 J kg-1 oC-1

• 4393 J kg-1 oC-1

• 11070 J kg-1 oC-1

• 4200 J kg-1 oC-1

What could cause the calculated specific heat capacity to be higher than the standard value?

• Using a metal cup

• Heat loss to surroundings

• Using cold water

• Incorrect mass measurement

What is the standard value of the specific heat capacity of water?

• 11070 J kg-1 oC-1

• 5000 J kg-1 oC-1

• 4393 J kg-1 oC-1

• 4200 J kg-1 oC-1

What is a key precaution to take when measuring the specific heat capacity of water?

• Use a metal container

• Use a container with high heat capacity

• Wait for the maximum temperature before recording

• Do not stir the water

Why is it important to wait until the temperature starts to fall before recording the final temperature?

• To allow the water to cool

• To ensure the heater is off

• To record the maximum temperature

• To let the water settle

What is the role of the joulemeter in the experiment?

• To measure the mass of water

• To measure the temperature change

• To measure the volume of water

• To measure the heat supplied