Understanding Density and Material Identification

What is the primary reason for measuring the density of a material?

• To measure its temperature

• To find its magnetic properties

• To identify the material

• To determine its color

How is density defined?

• Volume divided by mass

• Mass divided by volume

• Volume minus mass

• Mass times volume

If a sample has a mass of 89.3 grams and a volume of 12.5 cm cubed, what is its density?

• 6.14 grams per cm cubed

• 8.14 grams per cm cubed

• 9.14 grams per cm cubed

• 7.14 grams per cm cubed

Which material has a density of approximately 7.14 grams per cm cubed?

• Iron

• Aluminum

• Zinc

• Gold

What is the density of a material if its mass is 64.4 grams and its volume is 23.9 cm cubed?

• 5.69 grams per cm cubed

• 2.69 grams per cm cubed

• 3.69 grams per cm cubed

• 4.69 grams per cm cubed

Which method is used to find the volume of an irregularly shaped object?

• Color comparison method

• Weighing scale method

• Water displacement method

• Magnetic method

What is the initial volume of water in the graduated cylinder before the key is submerged?

• 100 ml

• 70 ml

• 80 ml

• 90 ml

After submerging the key, what is the new volume of water in the graduated cylinder?

• 94.5 ml

• 93.5 ml

• 92.5 ml

• 91.5 ml

What is the calculated density of the key if its mass is 222 grams and its volume is 11.5 cm cubed?

• 18.3 grams per cm cubed

• 19.3 grams per cm cubed

• 20.3 grams per cm cubed

• 21.3 grams per cm cubed

Why is density considered an intrinsic property?

• It depends on the shape of the object

• It changes with temperature

• It varies with the amount of substance

• It is independent of the amount of substance