# Mr. Sapone Sadapted Density HW Assignment Name______

Mr. Sapone’sAdapted Density HW Assignment Name______

Tips for Solving Density Problems (watch your units!)

- List what you know:
- Identify What you need to know:
- Figure out how to get from A to B

[1] What is the density of a piece of wood that has a mass of 25.0 grams and a volume of 29.4 cm3?

[2] A 10.0 cm3 sample of copper has a mass of 89.6 g. What is the density of copper?

[3] If 10.00mL of oil has a mass of 9.8g, what is the density of oil?

[4] Apiece of wood that measures 3.0 cm by 6.0 cm by 4.0 cm has a mass of 80.0 grams.What is the density of the wood and would it float in water?

[5] What is the density in g/cm3 of a board whose dimensions are 5.54cm x 10.6cm X 199cm and whose mass is 28.6kilograms?

[5] A cup of metal beads was found to have a mass425.28 grams.By water displacement, the volume of the beads was determined to be 48.0 cm3.Given the following three densities, identify the metal.

Gold: 19.3 g/cm3 Copper:8.86 g/ cm3 Bronze:9.87 g/ cm3

[6] If you had two cubes with the same mass, the cube with a higher volume will be (more/less) dense than the other cube.

[7] If you had two cubes with the same volume, the cube with a smaller mass will be (more/less) dense than the other cube.

[8] If an object has a mass value (in grams) that is less than its volume (in cm3) it will have a density value that is ( >, < or = ) 1 and will most likely (sink/float).

[9] If an object has a mass value (in grams) that is greater than its volume (in cm3) it will have a density value that is ( >, < or = ) 1 and will most likely (sink/float).

[10]A plastic ball has amass of 125 grams.What must the volume be if it has a density of 0.500 g/cm3.

[11] Gold has a density of 19.3g/cm3. How many grams would 25cm3 of gold be?

[12] Iron has a density of 7.8g/cm3. If you had 445g of iron, how much space would it take up?

[13]Calculate the density of sulfuric acid if 35.4 mL of the acid weighs 65.14 g

[14] What volume of silver metal will weigh exactly 2500.0 g. The density of silver is 10.5 g/cm3.

[15] If the density of 45.0 cm3 block of wood is 0.65 g/ml calculate the wood’s mass.

[16] A bar of chocolate is cut in half, what happens to its density?

[17] An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 14.0 ml. The height of the water rose to 19.0 ml. If the mass of the stone was 28.0 g, what was its density?

[18] If a peach has a volume of 130 cm3and sinks in water, what can you say about its mass?

[19] If a banana has a mass of 150 grams and floats in water, what can you say about its volume?

[20] An empty cup has a mass of 50g. When you add water to it the mass increases to 86g. What is the volume of the water in the cup?

[21] How many cubic centimeters are there in a cubic meter?

[22] 28.5 g of iron shot is added to a graduated cylinder containing 45.50 mL of water. The water level rises to the 49.10 mL mark, from this information, calculate the density of iron.

[23]A flask that weighs 345.8 g is filled with 225 mL of carbon tetrachloride. The weight of the flask and carbon tetrachloride is found to be 703.55 g. From this information, calculate the density of carbon tetrachloride.

[24] Rank the Cubes from Highest Density to Lowest Density

[25] Rank the Cubes from Highest Density to Lowest Density

[26] Rank the cubes from highest to lowest density

[27] Rank the cubes from highest to lowest density

[27] Rank the cubes from highest to lowest density. Do so by filling in the chart below

Block A / Block B / Block CMass (g)

Volume (cm3)

Density (g/cm3)

Object

Helium

Air

Gasoline

Wood (oak)

Wood (Ebony)

Ice

Corn Oil

Water

Sea Water

Magnesium

Aluminum

Gold

Steel

Silver

Lead

Mercury

Uranium

Plastic

Eraser

Ping Pong Ball

Honey

Pumice

Alcohol

Dish Soap / Density (g/cm3)

0.000178

0.0013

0.70

0.85

1.2

0.92

0.92

1.0

1.04

1.7

2.7

19.3

7.8

10.5

11.3

13.5

18.7

0.71

1.38

0.084

1.42

0.25

0.79

1.06

**[28] Density Column Assignment:**

a) Name five things that would float on water?

b) List 4 metals that would float on mercury.

c) Would you use water to put out a grease (oil) fire? Why or why not?

d) One the next page is a large graduated cylinder. The following 7 liquids and 6 solid objects are carefully placed inside it. Use them to label it and include the density of each object.

WaterMercury

Honey

Alcohol

Corn Oil

Salt Water

Gasoline / A gold ring

Ping pong ball

Plastic army man

Aluminum Nail

Ebony Wood

Eraser

Volume (cm3) / Mass (g)

0.8 / 2.6

1.1 / 2.7

1.0 / 2.9

1.0 / 2.8

1.0 / 2.7

2.1 / 5.4

1.8 / 5.6

3.0 / 8.5

2.5 / 5.5

3.8 / 9.9

2.8 / 8.1

3.2 / 8.4

1.9 / 5.1

1.7 / 4.2

0.40 / 1.1

[29] A student has a bunch of pieces of high purity aluminum. She determines the mass of each piece using a digital scale and the volume of each piece using water displacement in a graduated cylinder.

[a] Create and XY-Scatter Plot of the Data

[b] Draw a trendline or line of best fit.

[c] Determine the slope of the line

[d] What does the slope represent?

[e] Interpolate: what mass would 2.7cm3 have?

[f]Extrapolate: what mass would 6cm3 have?

**Advanced Problems**

[30]12) CaCl2 is used as a de-icer on roads in the winter. It has a density of 2.50 g/cm3. What is the mass of 15.0 L this substance?

[31]The density of paper is 1.20 g/cm3. What is the volume of one sheetof notebook paper? You may need to use a scale for this question.

[32] A solid sphere of gold has a circumference of 31.4cm and a mass of 10,100g. Use this information to determine the density of gold in g/cm3.

[33] On the surface of the earth, under normal atmospheric conditions, the density of air is 1.29kilograms per meter cubed (kg/m3). If a classroom is 4 meters high, 5 meters across and 6 meters wide, what is the mass of air in the room in kilograms? Convert that number into pounds assuming 1kilogram = 2.2 pounds.

[34]Find the density of a 5000g solid cylinder that is 10cm tall with a radius of 3cm.

[35]What is the mass of a cubic meter of water? How many pounds is that? (1kg = 2.2lbs)