Title: Density Equations Date: Objective: Practice density equations by answering density story...
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Transcript of Title: Density Equations Date: Objective: Practice density equations by answering density story...
![Page 1: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/1.jpg)
Title: Density Equations Date:Objective: Practice density equations by answering density story problems.Helpful Info:
Mass units are grams (g)Volume units are in (mL) , (cm3), (cc)
Formulas- Mass / Volume = Density Mass /Density = Volume Density x Volume = Mass
![Page 2: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/2.jpg)
Make a chart like the one below and fill it out as you do the story problems.
Practice Problems:1.Formula___________ Equation___________2. Formula____________ Equation___________
21. Formula___________ Equation__________
![Page 3: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/3.jpg)
1. A block of ice has a volume of 19cm3. Its mass is 17.5 g. What is its
density?
Formula: Density = Mass /VolumeEquation: 17.5g/ 19cm3 = 0.9g/ cm3
![Page 4: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/4.jpg)
2. Suppose 10 mL of water has a mass of 10g. What is the density of the
water?
Formula: Density = Mass / VolumeEquation: 10g /10 Ml =1g/ mL
![Page 5: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/5.jpg)
3. An old piece of silver jewelry has a mass of 20g and a volume of 1.9
cm3 What is its density?
Formula: Density = Mass /Volume Equation: 20g / 1.9cm3 = 10.5g/cm3
![Page 6: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/6.jpg)
4. Steel has a density of 7.8 g/cm3 . If the mass of a piece of steel is 234 g,
what is its volume?
Formula: Volume = Mass/DensityEquation: 234g / (7.8g) / cm3 = 30 cm3
![Page 7: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/7.jpg)
5. The density of a certain type of wood is 0.6 g/ cm3 . If the volume of a piece of this wood is 300 cm3 , what is
its mass?
Formula: Mass = Density x VolumeEquation: 0.6g /cm3 x 300cm3 =180 g
![Page 8: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/8.jpg)
6. A volcanic rock with a volume of 25 cm3 has a mass of 67.5 g.
What is the density of the rock?
A. 0.67 g/cm3 B. 2.7 g/cm3
C. 42.5 g/cm3 D. 92.5 g/cm3
Formula: Mass/Volume = DensityEquation: 67.5 g/25 cm3 = 2.7 g/cm3
![Page 9: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/9.jpg)
7. A rock has a density of 8 g/cm3. If the rock's mass is 2 g, what is the
rock's volume?
A. 0.25 cm3 B. 4 cm3
C. 16 cm3 D. 18 cm3
Formula: Volume = Mass/DensityEquation: 2 g/(8 g/cm3) = .25cm3
![Page 10: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/10.jpg)
8. A student collected data about the density of air. She found that .1 g of air had a volume of 100 cm3. What is the
density of air?
A. .001 g/cm3 B. .01 g/cm3 C. .1 g/cm3 D. 1.0 g/cm3
Formula: Density = Mass/VolumeEquation: .1g / 100cm3 =.001g/cm3
![Page 11: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/11.jpg)
9. Calculate the density of 72,000 cm3 of salt water with a mass of 73,500 g.
A. 2.4 g/cm3 B. 2.2 g/cm3
C. 1.02 g/cm3 D. 0.8 g/cm3
Formula: Density =Mass/VolumeEquation: 73,500 g/72,000 cm3 =
1.02 g/cm3
![Page 12: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/12.jpg)
10. What is the average density of Earth's mantle if a 1,000 cm3 sample
has a mass of 3,330 g?
A. 5.52 g/cm3 B. 3.3 g/cm3
C. 0.30 g/cm3 D. 0.37 g/cm3
Formula: Density= Mass / VolumeEquation: 3,300 g/1,000 cm3 = 3.3
g/cm3
![Page 13: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/13.jpg)
11. If a sample of ocean water has a density of 1.03 g/cm3 and a mass of
42,000.0 g, what is the volume of the water?
A. 38,877 cm3 B. 40,800 cm3
C. 42,000 cm3 D. 42.235 cm3
Formula: Volume= Mass / DensityEquation: 42,000 g/(1.03 g/cm3) = 40,777 cm3
Round to 3 significant figures. 40,800 cm3
![Page 14: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/14.jpg)
12. The Dead Sea contains the highest concentration of salt in any body of
water on Earth. If 1230 cm3 of Dead Sea water has a mass of 1550 g, what is the
density of the water?
A. 0.79 g/cm3 B. 1.02 g/cm3
C. 1.13 g/cm3 D. 1.26 g/cm3
Formula: Density =Mass/VolumeEquation: 1550 g/1230 cm3 = 1.26 g/cm3
![Page 15: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/15.jpg)
13. A liquid has a density of 1g/mL. If you have 50 mL of the liquid, what
would its mass be?
A. 25 g B. 50 g C. 75 g D. 100 g
Formula: Mass = Volume x DensityEquation: 50mL x 1g/mL = 50g
![Page 16: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/16.jpg)
14. A square chunk of plastic has a length of 5 cm, width of 5 cm and height
of 5 cm. It has a mass of 200 g.
What is its density?
A. .12 g/cm3 B. 1.0 g/cm3 C. 1.6 g/cm3 D. 2.3 g/cm3
Formula: Density= Mass / VolumeEquation: 200g /(5x5x5) =1.6 g/cm3
![Page 17: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/17.jpg)
15. Water has a density of 1 g/mL. What density might a typical rock
be?
A. .005 g/cm3 B. .5 g/cm3 C. 5 g/cm3 D. 50 g/cm3
![Page 18: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/18.jpg)
Hint: Rocks are more dense than water. The answer would have to be more than the density of water
which is 1g/mL.
Answer: Letter ‘C’ with 5 g/cm3 is the next most dense after water with letter ‘D’ extremely dense, not a good choice.
![Page 19: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/19.jpg)
*16. A rock dropped in a graduated cylinder raises the level of water from 20
to 35 mL. The rock has a mass of 45 g. What is the density of the rock?
A. 1.3 g/cm3 B. 2.3 g/cm3 C. 3.0 g/mL D. 4.5 g/cm3
Formula: Density = Mass/Volumedisplacement from 20mL to 35ml is = 15mLEquation: 45g/ 15mL = 3.0g/mL
![Page 20: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/20.jpg)
*17. Water has a density of 1 gram/milliliter. There are four rocks
that all have the same volume of 5 cubic centimeters. The mass for each of these rocks is given below. Which of the four rocks will float when placed in
water?
A. 15 grams B. 10 grams C. 6 grams D. 4 grams
![Page 21: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/21.jpg)
Formula: M/V=D X/5= (<1)
Answer : A. 15/5=3B. 10/5=2C. 6/5=1.2D. 4/5=0.8 *
![Page 22: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/22.jpg)
*18. A liquid is found to have a volume of 75 mL in a graduate. When placed on a balance, the
liquid and graduated cylinder have a mass of 125 g. The empty graduated
cylinder has a mass of 50 g. What is the density of the liquid?
A. .1 g/mL B. 1 g/mL C. 2.2 g/mL D. 22 g/mL
![Page 23: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/23.jpg)
Hint: Density =M / V
125g (cylinder w/ liquid) subtract 50g (cylinder alone)=75g
Equation: 75 /75 mL =1g/mL
![Page 24: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/24.jpg)
*19. Water has a density of 1.0 g/mL. Which of the following
substances would float in water?
![Page 25: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/25.jpg)
A. a substance with a volume of 418.2 mL and a mass of 423.23 grams
B. a substance with a mass of 534.23 grams and a volume of 522.3 mL
C. a substance with a volume of 3.35 mL and a mass of 22.64 grams
D. a substance with a mass of 1.33 grams and a volume of 1.38 mL
![Page 26: Title: Density Equations Date: Objective: Practice density equations by answering density story problems. Helpful Info: Mass units are grams (g) Volume.](https://reader031.fdocuments.us/reader031/viewer/2022013112/56649d755503460f94a55833/html5/thumbnails/26.jpg)
Formula: Divide Mass by volume for each. The answer must be less than
1.0g/mL to float, the density of water.
Equation: D1.33 g/1.38 mL = 0.96 g/mL. This is less dense than water, so it will float.