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DENSITY DENSITY – THE MASS OF – THE MASS OF ONE CM ONE CM 3 3 OR ONE ML OF A OR ONE ML OF A SUBSTANCE SUBSTANCE Density mass (g) volume(cm 3 ) Mercury 13.6 g/cm 13.6 g/cm 3 21.5 g/cm 21.5 g/cm 3 Aluminum 2.7 g/cm 2.7 g/cm 3 Platinum
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Transcript of DENSITY – THE MASS OF ONE CM 3 OR ONE ML OF A SUBSTANCE Mercury 13.6 g/cm 3 21.5 g/cm 3 Aluminum...

• DENSITY THE MASS OF ONE CM3 OR ONE ML OF A SUBSTANCE13.6 g/cm321.5 g/cm32.7 g/cm3

• Problem: A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm3).

• Problem A piece of copper has a mass of 57.54 g. It is 9.36 cm long, 7.23 cm wide, and 0.95 mm thick. Calculate density (g/cm3).

G=U=E=S=S=M= 57.54 g, Length= 9.36 cm Width= 7.23 cm, Thickness0.95 mm Density= ? (g/cm3)Density= mass volumeVolume = l x w x h0.95 mm x 1 m x 102 cm 103 mm 1 m=0.095 cm3Volume = 9.36 cm x7.23 cm x 0.095 cm = 6.4 cm3 Density= 57.54 g 6.4 cm3=8.990625 or 9.0 g/cm3

• PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CM3. WHAT IS THE MASS OF 95 ML OF HG IN GRAMS?

• PROBLEM: MERCURY (HG) HAS A DENSITY OF 13.6 G/CM3. WHAT IS THE MASS OF 95 ML OF HG?G=U=E=S=S=D= 13.6 g/cm3, Volume = 95mLMass=?Density= mass volumeMass= density x volumeMass= 13.6 g/cm3 x 95mL1 cm3 = 1 mL1292g 1300 g

• LEARNING CHECKOsmium is a very dense metal. What is its density in g/cm3 if 50.00 g of the metal occupiesa volume of 2.22cm3?

A) 2.25 g/cm3B)22.5 g/cm3C)111 g/cm3

G=U=E=S=S=

• VOLUME/WATER DISPLACEMENTA solid displaces a matching volume of water when the solid is placed in water. What is the volume of the metal object.

33 mL25 mL V= 33mL-25mL8 mL

• What is the density (g/cm3) of 48 g of a metal if the metal raises the level of water in a graduated cylinder from 25 mL to 33 mL?

G U E S SM= 48 g V= 8 mLV= 8 cm3D= g/cm3 D= mass Volume D= 48 g 8cm3 D= 6.0 cm3

• LEARNING CHECK

Which diagram represents the liquid layers in the cylinder?(K) Karo syrup (1.4 g/mL),(V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL)

A)B) C)KKWWWVVVK

• LEARNING CHECK

Which diagram represents layers in the cylinder? Each layer represent a different phase or state of matter(I) Solid water (ice) (0.9 g/mL), (V) Water vapor (0.84 g/mL,) (W) liquid water (1.0 g/mL)

A) B.) C)IIVVVWWWI

• SOLUTION

(K) Karo syrup (1.4 g/mL), (V) vegetable oil (0.91 g/mL,) (W) water (1.0 g/mL)

1) KWV

• EXIT TICKETThe table below shows some information for four different elements.

A cube of an unknown element has a shiny silvery color. The side of the cube measures 3.0 cm and the cube has a mass of 194.4 g. Based on the information provided, which element makes up the cube?A barium B beryllium C chromium D phosphorous