Density Review

  1. WATCH Brainpop: Measuring Matter
  2. What is the equation for density? ______
  3. What is the metric unit for mass? ______Volume? ______Density?______
  4. One side of a cube is 5 cm. What is the cube’s volume? ______
  5. What is always true of an object with a lot of mass?
  6. It has a lot of matterb. It has a large volumec. It has a high densityd. It cannot be accurately measured
  1. If a substance has a large mass & a small volume, what can you conclude about it?
  2. It’s very dense.b. It will float on water.c. It’s made of rock & metal.d. It has a low density
  1. For a given substance, which statement is correct?
  2. Density increases as volume increases.C. Density is not related to mass or volume.
  3. Density increases as mass increases.D. Density remains constant as volume and mass change.
  1. What is the relationship between cm3 and mL for water?
  2. They are equivalentc. They are both dependent on an object’s mass
  3. cm3 measures length; mL measures volumed. They are both unrelated to an object’s density
  1. What is the mass of 1 ml of water at room temperature? ______
  2. What is the density of water? (include units) ______
  1. You cut up a stick of butter into equal pieces. How does the density of the stick compare to the density of the pieces?

______

______

Fluid / Density (g/ml)
Clear Water / 1.0
Red rubbing alcohol / 0.79
Green saltwater / 1.16
Yellow corn oil / 0.92
Brown molasses / 1.40
Blue dish detergent / 0.93
  1. Make a density column: Use the information in the table to color in the beaker with the correct layering of fluids. Think about this before you start coloring. Ask your teacher if you don’t get it.
  1. Ebony is a dark wood with a density of 1.2 g/cm3. Would it float in water? ______Explain. ______

______

  1. A student determines the density of six different-sized samples of quartz sand, as shown in the table.
  2. What is property X? ______
  3. Do you believe that this data is accurate? Explain why or why not.

Density Math INCLUDE UNITS!

Mass / Volume / Density
  1. What is the density of CO2 gas if 0.196 g occupies a volume of 100 ml?

  1. A block of wood 3 cm on each side has a mass of 27 g. What is the density?

  1. An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?

  1. A 10.0 cm3 sample of copper has a mass of 89.6 g. What is its density?

  1. A forensic scientist finds a piece of bone with a mass of 1 kg. Given that bone has a density of 1.85 g/cm3, what is its volume?

  1. A block of lead measuring 1 x 2 x 3 cm has a density of 11.34 g/cm3. What is its mass?

  1. A 100-ml graduated cylinder full of gasoline has a density of 0.73 g/cm3. If the mass of the cylinder is 10.5 grams, what is the mass of the gasoline?

Show Work / Answer
  1. Silver has a density of 10.5 g/cm3 & gold has a density of 19.3 g/cm3. Which would have a greater mass, 5 cm3 of silver or 5 cm3 of gold?

  1. Which liquid is more dense, 5 L of ethanol with a mass of 3.9 g or 5 L of benzene with a mass of 4.4 g?

  1. A sample of iron has the dimensions of 2 cm x 3 cm x 2 cm. If the mass of this rectangular-shaped object is 94 g, what is the density of iron?

  1. A jar contains 30 mL of glycerin (whose mass is 37.8 g) and 60 mL of corn syrup (whose mass is 82.8 g). Which liquid is on top?

  1. Which is more dense, a cubic meter of water or a cubic meter of ice?