Transcript Mass
Notes SPI 0807.9.7 Density
What is density?
Density is simply how much matter (mass) you have crammed in a given space (volume) Density is determined by dividing the mass of the object by the volume of the object Example : If you have two objects that are the same size, but one of the object contains more matter, then you would say that it has greater density than the other object
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Notes SPI 0807.9.7 Density Feb 7, 2013
1) Please do not use a calculator…work the math on your paper
Solve The Three Density Problems Shown Below
2) Use this formula
Density=mass divided by volume or D= m/V
1) …density of an object with a mass of 25g a volume of 10cm 3 ? 2) …density of an object with a mass of 45kg a volume of 43m 3 ?
3) …density of an object with a mass of 350g a volume of 95cm 3 ?
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Notes SPI 0807.9.7 Density
Solve the density problems below
Density=mass divided by volume
1) …density of an object with a mass of 25g a volume of 10cm 3 ?
25g ÷ 10cm 3 = 2.5g/cm 3
2) …density of an object with a mass of 45kg a volume of 43m 3 ?
(round up to the nearest hundredth)
45kg ÷ 43m 3 = 1.05kg/m 3
3) …density of an object with a mass of 350g a volume of 95cm 3 ? (round up to the nearest hundredth)
350g ÷ 95cm 3 = 3.68g/cm 3 3
Notes SPI 0807.9.7 Density Feb 12, 2013 Designation
Liquid 01
Substance
Water
Density
1.0 g/mL Liquid 02 Liquid 03 Liquid Mercury Turpentine 13.6 g/mL 0.8 g/mL
1) Identify which liquids would occupy levels A, B, and C according to their density.
Level A Level B Level C 4
Notes SPI 0807.9.7 Density 2) Which cube below has the GREATEST density?
(A) Mass: 12g Volume: 3cm 3 (C) Mass: 11g Volume: 3cm 3 (B) Mass: 19g Volume: 7cm 3 (D) Mass: 23g Volume: 5cm 3 5
Notes SPI 0807.9.7 (Density) ANSWERS Feb 12, 2013 Designation
Liquid 01
Substance
Water
Density
1.0 g/mL Liquid 02 Liquid 03 Liquid Mercury Turpentine 13.6 g/mL 0.8 g/mL
1) Identify which liquids would occupy levels A, B, and C according to their density.
Level A Level B Turpentine (0.8 g/mL) Water (1.0 g/mL) Level C Mercury (13.6 g/mL) 6
Notes SPI 0807.9.7 (Density) ANSWERS 2) Which cube below has the GREATEST density?
(A) Mass: 12g Volume: 3cm 3 4 g/cm 3 (B) Mass: 19g Volume: 7cm 3 2.71 g/cm 3
(C) Mass: 11g Volume: 3cm 3 3.6 g/cm 3 (D) Mass: 23g Volume: 5cm 3 4.6 g/cm 3 7