Density Flashcards
156 g sample of steel has a volume of 20.0 mL. What is the density of the steel sample?
___ g/mL
7.80
The density of an object relies on both the ________________ of the object.
volume and mass
A material with a density of 2.7 grams/mL occupies 35.6 mL. How many grams of the material are there?
96.12
A 50.0 mL volumetric flask filled with aqueous solution of hydrogen peroxide has a total mass of 88.5 g. The mass of the volumetric flask is 16.5 g. What is the density of the aqueous solution of hydrogen peroxide?
1.44
Placing a sample of iron (II) oxide into a graduated cylinder makes the water volume increase 12.0 mL. The mass of the sample is 76.6 g. What is its density? (Round to the nearest hundredths)
___ g/mL
6.383
24 g copper is submerged in water in a graduated cylinder, and the total volume increases by 2.7 mL. What is the density of copper?
(Your answer should only have 2 significant figures.)
___ g/cm3
8.8
A cubic container is filled up with an unknown liquid whose density is 0.180 g/ cm3. The side length of the container is 5.00 cm. What is the mass of this liquid?
___ g
22.5
The mass of sample X is 20.0g. It was placed in a graduated cylinder and the water level rose from A (14 mL) to B (19 mL). What is the density of sample X? Pay close attention to significant figures.
___ g/mL
4.0
156 g sample of steel has a volume of 20.0 mL. What is the density of the steel sample?
___ g/mL
7.80
The formula for density is d=mV. A piece of wood has a mass of 25 kg and a volume of 0.0385 m3. What is the density of the wood?
649kg/m^3
A 4.24 kg marble slab has a volume of 1564 cm3. What is its density in g/cm3?
2.71 g/cm3
____ is a measure of how closely packed particles of matter are in a certain amount of space.
Density
A certain liquid sample has a volume of 14.7 mL and a mass of 22.8 grams. Calculate the density.
1.55 g/mL
The density formula is d=mV. A cylinder of lead has a diameter of 3 cm and a height of 8 cm. The density of lead is 11.4 g/cm3. What is the mass of the cylinder?
644.3 grams
A 50.0 mL beaker contains 680. g mercury. What is the density of mercury?
13.6 g/mL
The density of ethanol is 0.789 g/mL at 20° C.
What is the mass of 80.0 mL of ethanol at 20° C?
63 g
Which of the following statements correctly describes density?
Density is an intensive property because it does not depend on the amount.
Complete the sentence using the words increases, decreases or remains same.
As the temperature increases, density generally ___
decreases
The density of gold is 19.3 grams per cm3.
What is the mass of a gold block that measures 10 cm by 3 cm by 3 cm?
1737 grams or 1.737 kg
Using the above diagram as a reference, which of the following best explains why ice floats on water?
The molecules in ice are more spread out so ice is less dense than water
At 20∘C, skim milk has a density 1.033 kilograms per liter, while light cream has a density of 1.012 kilograms per liter.
At 20∘C, what is the mass of one gallon of skim milk if 1 liter is approximately 0.264 gallons?
3.9 kilograms
Roland is measuring a physical property of an object. He records the measurement “3.12 g/cm3”. Roland was most likely measuring which of the following?
density
Gases have much higher density than liquids.
false
At 20∘C, skim milk has a density 1.033 kilograms per liter, while light cream has a density of 1.012 kilograms per liter.
At 20∘C, a container holding 9 liters of liquid is 9.108 kilograms. Does the container hold skim milk or light cream?
light cream
The SI unit of density is kg/m3, but densities of most solids and liquids are usually reported in units of g/cm3(org/mL).
true
Solids and liquids have higher densities than gases.
true
Density is defined as the mass of an object divided by its volume.
true
The gases are less dense than liquids or solids at room temperature.
true
True or False:
If a ball with a density of 0.90 g/cm3 is submerged in ethanol, it may float up by adding water to ethanol. (The density of water is 1.0 g/mL and the density of ethanol is 0.80 g/mL)
true
True or false:
In order to float, the gases inside a hot air balloon are heated. Because the density of gases is lower when temperature increases, the hot air balloon can float.
true
