Science Density 8th Grade

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Put the liquids in order from most dense to least dense?

• 4, 3, 2, 1
• 1, 2, 3, 4
• 3, 4, 2, 1, 
• 4, 3, 1, 2

An object with which of the following densities will float on water?

• 0.7 g/cm3
• 1.2 g/cm3
• 3.5 g/cm3
• 11.4 g/cm3

Jack has a rock. The rock has a mass of 14g and a volume of 2cm³. What is the density of the rock?

• 7 mL
• 7 g/cm³
• 28 g/cm³
• 1/7 g/cm³

Draw an easy way to remember density equation

How do you find density of a solid (non unique shape)

• 1. 1. Measure Length, Width, Height of object 2. Multiply L*W*H using cm3 for units 3.Measure mass using scale

  2. 4. Use density equation

• 1. 1.Find mass of empty graduated cylinder

  2. 2. Pour liquid into cylinder and measure mass again

  3. 3. Find difference between both masses
     4. Read volume on graduated cylinder

  4. 5. Use M/V

• 1. 1. Record initial volume of water

  2. 2. Find final volume of water with object inside

  3. 3. Find difference between the volumes 4. Measure the mass

  4. 5. Use M/V

• M/v

How do you find density of a solid (unique shape)

• 1. 1. Measure Length, Width, Height of object 2. Multiply L*W*H using cm3 for units 3.Measure mass using scale

  2. 4. Use density equation

• 1. 1.Find mass of empty graduated cylinder

  2. 2. Pour liquid into cylinder and measure mass again

  3. 3. Find difference between both masses
     4. Read volume on graduated cylinder

  4. 5. Use M/V

• 1. 1. Record initial volume of water

  2. 2. Find final volume of water with object inside

  3. 3. Find difference between the volumes 4. Measure the mass

  4. 5. Use M/V

• M/v

How do you find density of a liquid

• 1. 1. Measure Length, Width, Height of object 2. Multiply L*W*H using cm3 for units 3.Measure mass using scale

  2. 4. Use density equation

• 1. 1.Find mass of empty graduated cylinder

  2. 2. Pour liquid into cylinder and measure mass again

  3. 3. Find difference between both masses
     4. Read volume on graduated cylinder

  4. 5. Use M/V

• 1. 1. Record initial volume of water

  2. 2. Find final volume of water with object inside

  3. 3. Find difference between the volumes 4. Measure the mass

  4. 5. Use M/V

• M/v

Density is the amount of ____ in a given volume.