Density

Which one of the following statements is INCORRECT?
1. Density is the volume per unit mass of a material.
2. Density is the mass per unit volume of a substance.
3. Density may be measured in units of g/cm³.
4. Density may be measured in units of kg/m³.
The masses and volumes of four different metals were measured in an experiment and entered in a table as shown. Which of these metals has the greatest density?
1. Gold
2. Mercury
3. Brass
4. Aluminium
If V = volume, D = density and M = mass of an object, then which one of the following relationships is correct?
1. M = D × V
2. D = M × V
3. V = M × D
4. M = D ÷ V
If the density of paraffin oil is 0.8 g/cm³, what will be the mass of 10 cm³ of paraffin oil?
1. 8 g
2. 0.8 g
3. 10.8 g
4. 12.5 g
In an experiment to determine the density of a metal block, the following results were obtained: length of block = 5 cm width of block = 2 cm height of block = 3 cm mass of block = 135 g
What is the density of the metal?
1. 4.5 g/cm³
2. 13.5 g/cm³
3. 4050 g/cm³
4. 2.2 g/cm³
Which one of the following pieces of apparatus would you NOT use in measuring the density of a stone?
1. Callipers
2. Measuring cylinder
3. Balance
4. Overflow/Eureka can
If copper floats on mercury, and gold sinks in mercury, then which one of the following statements is TRUE?
1. Copper is less dense than gold.
2. Copper is more dense than mercury.
3. Mercury is denser than gold.
4. Mercury is the least dense of the three metals.
Which one of the following statements is INCORRECT?
1. A steel ship will sink in seawater because its density is greater than the density of the seawater.
2. A solid object floats in a liquid if it is less dense than the liquid.
3. Different types of wood (e.g. mahogany, pine, cork etc.), all of the same shape will all float at different depths in water.
4. The density of a submarine will determine if it floats submerged, or if it sinks in the water.
Three liquids of different densities are placed in a measuring cylinder as shown. Which one of the following is most likely to be correct?
1. A = cooking oil, B = water, C = mercury
2. A = mercury, B = water, C = cooking oil
3. A = cooking oil, B = mercury, C = water
4. A = water, B = cooking oil, C = mercury
A cube of mass 128 g has a density of 2 g/cm³. what is the length of each side of the cube?
1. 4 cm
2. 8 cm
3. 64 cm
4. 256 cm
Which of the following sets of apparatus would be most suitable for experimentally determining the density of a liquid?
1. beaker, balance, measuring cylinder and pipette
2. beaker, metre-stick, balance and callipers
3. beaker, pipette, callipers and measuring cylinder
4. beaker, callipers, measuring cylinder and balance
The table shows the masses and densities for four different substances. Which of these substances has the least volume?
1. C
2. B
3. A
4. D
The diagram shows four different substances which have been placed in a basin of water. Which one of the following statements is TRUE?
1. X has the same density as the water, and W is the least dense.
2. X is the least dense and Z is the most dense.
3. Z is the densest and Y is the second densest.
4. W is more dense than Y and the density of X is equal to 1 g/cm³.
A fresh egg will sink to the bottom of a saucepan of water, while a stale egg will move to the surface of the water. How is this best explained?
1. The density of the egg decreases as the egg goes stale.
2. Some of the contents of the egg escapes and increases the density of the water.
3. The density of the egg increases as it goes stale.
4. Some of the egg shell falls off which makes it lighter.
Four blocks of different metals, each had the same size and volume. They were weighed on a balance and their masses recorded in the table shown. Which one of these metals is the least dense?
1. B
2. A
3. C
4. D
In the photo shown, there is a person floating in the water of the Dead Sea. Why does this person not sink?
1. The density of the saltwater is greater than the man's density.
2. He is not a very heavy person.
3. This person must be lying on a submerged airbed.
4. His body is more dense than the density of the saltwater.
Which one of the following statements is CORRECT?
1. The density of the iceberg is less than the density of the seawater.
2. The density of an iceberg and seawater are equal.
3. The seawater's density must be less than that of the iceberg.
4. The iceberg contains a lot of trapped air which keeps the block afloat.
Which of the following metals will sink in a basin of mercury whose density is 13.6 g/cm³?
1. Uranium of density 19.5 g/cm³
2. Iron of density 7.9 g/cm³
3. Lead of density 11.3 g/cm³
4. Aluminium of density 2.7 g/cm³
Which one of the following is not a unit of density?
1. kg/m
2. kg/m³
3. g/m³
4. g/cm³
A measuring cylinder contains 100 ml of a liquid. The mass of the measuring cylinder and the liquid is 150 g. The mass of the empty measuring cylinder is 50 g. the liquid in the measuring cylinder is most likely to be
1. water
2. alcohol
3. mercury
4. cooking oil
Which one of the following conditions will cause the density of a liquid to decrease?
1. Heating the liquid
2. Cooling the liquid
3. Dividing the liquid into two equal volumes
4. Adding more of the liquid to the container
The density of lead is 11.3 g/cm³. If a lead bar has a volume of 50 cm³, what is the mass of the lead bar?
1. 565 g
2. 4.4 g
3. 0.226 g
4. 61.3 g
Whether or not an objects floats in water will depend upon both its
1. mass and volume
2. length and mass
3. density and width
4. volume and colour
Why does a ship rise up in the water when it passes from a river to the sea?
1. The seawater is more dense than the water in the river.
2. The waves of the sea pushes the ship up in the water.
3. The ship is less sheltered from strong winds while at sea, and these winds push up the ship.
4. The ship lightens its load before going out to the sea.
The barchart shows the densities of different metals.
Four of these metals, each with a volume of 150 cm³ were compared.
Which of these four metals below has the greatest mass?
1. Lead
2. Copper
3. Iron
4. Aluminium
Study the chart of densities of different metals.
Which one of these metals would have a volume of 0.75 cm³ and a mass of 14.5 grams?
1. Gold
2. Platinum
3. Copper
4. Iron
Study the chart showing the densities of different metals.
What is the approximate mass of 0.5 cm³ of silver?
1. 5 grams
2. 10 grams
3. 1 gram
4. 0.5 gram
Which is heavier?
Air or copper.
1. It depends on the amount of each being considered.
2. Copper, of course.
3. Air
4. It depends on the temperature and pressure.
All metals have the same density
1. FALSE
2. TRUE
Which one of the following substances is most dense?
1. Gold
2. Water
3. Air
4. Oak
Which one of the following substances is the least dense?
1. Oxygen gas
2. Water
3. Iron
4. Wood
All wood has the same density
1. FALSE
2. TRUE
Complete the sentence:
Density is mass per unit _________
1. volume
2. length
3. weight
4. area
There are two commonly used units of density.
Which one of the following is NOT a unit of density?
1. Grams per metre squared
2. Grams per centimetre cubed
3. Kilograms per metre cubed
Which one of the following is most likely the density of seawater?
1. 1.02 grams per centimetre cubed
2. 102 grams per centimetre cubed
3. 1020 grams per centimetre cubed
4. 2.0 grams per centimetre cubed
The density of pure water is 1 g/cm³.
What is this if using the unit kg/m³?
1. 1000
2. 100
3. 0.001
4. 10
"A block of ash wood has a mass of 1 kilogram, and occupies a volume of 0.00125 m³.
What is its density?"
1. 800 kg/m³
2. 0.00125 kg/m³
3. 1.00125 kg/m³
4. 0.8 kg/m³
A six-sided dice for a board game has a mass of 10.4 grams and each side has a length of 20 mm.
What is its density?
1. 1.30 g/cm³
2. 9 g/cm³
3. 0.0013 g/cm³
4. 30.4 g/cm³
The density of aluminium is 2.7 grams per centimetre cubed.
What mass will a volume of 200 cm³ of aluminium have?
1. 540 grams
2. 5.4 grams
3. 54 grams
4. 0.054 grams
The density of 5 metres cubed of copper will be greater than that of 1 metre cubed of copper.
1. FALSE
2. TRUE
A stone of mass 90 grams has a volume of 30 centimetres cubed.
What is its density?
1. 3 grams per centimetre cubed
2. 120 grams per centimetre cubed
3. 0.33 grams per centimetre cubed
4. 2700 grams per centimetre cubed
Which one of the following would you NOT use to determine the density of a small stone?
1. Metre-stick
2. Measuring cylinder
3. Overflow/Eureka can
4. Piece of string
Which one of the following would you NOT use to get the density of a liquid?
1. Vernier callipers
2. Balance
3. Beaker
4. Measuring cylinder
Butter has a density of 0.87 grams per centimeter cubed.
A lump of butter is thrown into a river.
The butter will float.
1. TRUE
2. FALSE
Olive oil is a liquid whose density is 0.92 g/cm³, and does not mix with water.
Olive oil and water are placed in a beaker.
Which of these liquids will float on top?
1. Olive oil
2. Water
3. Neither. They are mixed together
Why does an iceberg float on water?
1. The density of the iceberg is less than that of water.
2. The density of the iceberg is greater than that of water.
3. The iceberg is lighter.
Steel has a density of 7.9 g/cm³, while mercury has a density of 13.6 g/cm³.
A small piece of steel is placed in a basin of mercury.
Does the steel sink or float on the mercury?
1. Float
2. Sink
3. Neither
Which of the following substances is the least dense?
1. Helium
2. Water
3. Carbon dioxide
4. Steam
Why does a can of diet cola float in water, while a can of regular cola sinks?
1. The can of diet cola contains less dissolved solids.
2. The diet cola can contains more metal.
3. The water is less dense than the diet cola.
When learning to swim, a boy finds it easier to do so at the beach rather than in a swimming pool.
Why?
1. Seawater is more buoyant than water in a swimming pool.
2. He is heavier in the swimming pool.
3. There is more chlorine in the swimming pool water.
4. The water in the swimming pool is warmer.
A tea light candle is placed in a beaker of water and floats, while a second similar tea light candle is placed in a beaker of cooking oil and sinks. Which of the following statements is true?
1. Water is more dense than cooking oil.
2. The candle is more dense than water.
3. Cooking oil is denser than water.
4. The cooking oil is more dense than the candle.
A steel nail (density = 8 g/cm³), water and mercury (density = 13.6 g/cm³) are placed in a beaker.
Where will the steel nail settle?
1. Between the water and mercury.
2. At the very bottom of the beaker.
3. At the very top.
The amount of alcohol in beer or wine may be tested using
1. a hydrometer
2. a barometer
3. an opisometer
4. a callipers
A carrot slice sinks in liquid A and floats in liquid B.
Which liquid is more dense?
1. B
2. A
3. Both A and B are equally dense.
Which one of the following conditions will cause the density of a liquid to increase?
1. Place it in a fridge at 4 degrees Celsius.
2. Heat it to 37 degrees Celsius.
3. Heat it until it evaporates.
4. Mix it with cooking oil.
Which one of the following do we use to measure the volume of oddly shaped object?
1. Eureka/Overflow can
2. Metre stick
3. Conical flask
4. Callipers
The apparatus shown is known by different names.
Which one of the following is not one of these names?
1. Tin can
2. Overflow can
3. Displacement can
4. Eureka can

Density

Multiple Choice Quiz