Key Concept 1-Density

Which option contains only apparatus that could be used to determine the volume of a small block of unknown material?

• measuring cylinder, metre rule

• measuring cylinder, stopwatch

• metre rule, balance

• metre rule, stopwatch

A student wishes to find the volume of a small, irregularly-shaped stone.A ruler and a measuring cylinder containing some water are available. Which apparatus is needed?

• Neither the ruler nor the measuring cylinder

• The measuring cylinder only

• The ruler and the measuring cylinder

• The ruler only

A student is asked to find the volume of a small

irregularly-shaped piece of rock. He has the

following apparatus available.Which apparatus must the student use to find the volume of the small piece of rock?

• Balance and rule

• Rule only

• Balance and measuring cylinder

• Measuring cylinder only

The diagrams show an experiment to determine the volume of a stone.What is the volume of the stone?

• 3 cm3

• 4 cm3

• 7 cm3

• 11 cm3

The diagram shows a stone of irregular shape.Which property of the stone can be found by lowering it into a measuring cylinder half-filled with water?

• length

• mass

• volume

• weight

A student is told to measure the density of a liquid and also of a large cube of metal. Which pieces of equipment are sufficient to be able to take the measurements needed?

• measuring cylinder and ruler

• balance and thermometer

• balance, measuring cylinder and ruler

• measuring cylinder, ruler and thermometer

The table gives the volumes and masses of four objects. Which object has the greatest density?

• A

• B

• C

• D

A small bottle has a mass of 20 g when empty. The volume of the bottle is 10 cm3. When full of liquid, the total mass is 150 g. What is the density of the liquid?

• 15 g / cm3

• 13 g / cm3

• 2.0 g / cm3

• 0.50 g / cm3

A liquid has a volume of 100 cm3 and a mass of 85g. The density of water is 1.0 g/cm3. How does the density of the liquid compare with the density of water?

• Its density is lower than that of water

• Its density is the same as that of water

• Its density is higher than that of water

• It is impossible to say with only this data

rectangular gymnasium is 50 m long, 25 m wide and 8.0 m high. The density of air is 1.2 kg/m3

What is the best estimate of the mass of air in the gymnasium?

• 0.00012 kg

• 100 kg

• 8300 kg

• 12 000kg