Chemistry Density

A rock sample has a mass of 16 grams and a volume of 8 cm3. When the rock is cut in half, what is the volume and density of each piece?

• volume: 4 cm3, density: 2.0 g/cm3

• volume: 8 cm3, density: 0.5 g/cm3

• volume: 4 cm3, density: 4.0 g/cm3

• volume: 8 cm3, density: 1.0 g/cm3

The table provides identifies of substances based on density. A sample of an unknown substance has a mass of 28.8 grams and a volume of 4 cm3. Based on its density, it could be which of the following substances?

• gold

• iron

• lead

• tin

The density of a piece of gold jewelry is often used to determine its purity. Density is what kind of property?

• chemical

• colligative

• extrinsic

• physical

Consider the picture of the jar holding oil, syrup, and water. It would be easy to pour off the oil to separate from both the syrup and water because the liquids have different

• densities

• masses

• temperatures

• volumes

Tags

NGSS.MS-PS1-2

During Mr. Nye's science class, students were expected to identify various substances using physical properties they could easily measure. Mr. Nye gave each of the five groups a green, metal cube and asked them to identify what the cube was made of. Matt's cube, after 5 trials, had an average density of 7.40 g/cm3 . His group's cube was made of

• aluminum

• gold

• nickel

• zinc

Tags

NGSS.MS-PS1-2

This table displays

• price values of the metals.

• chemical properties of the metals.

• physical properties of the metals.

• corrosive resistance of the metals.

Which of the following would be evidence that a chemical change has occurred?

• change in size

• change in state

• new substance formed

• change in shape

Tags

NGSS.MS-PS1-2

Find the density of a sample of aluminum with a mass of 6 g and a volume of 2.22 cm³. Round your answer to the nearest tenth.

• 3.8 g/cm³

• 8.2 g/cm³

• 13.3 g/cm³

• 2.7 g/cm³

Which of the following is true about density?

• It is a chemical property.

• It is found by taking volume minus mass.

• It doesn't change for all samples of the same substance.

• It is the same for all elements.

A metal block has a mass of 50 grams and a volume of 10 cm^3. What is the density of the metal?

• A) 5 g/cm^3

• B) 0.2 g/cm^3

• C) 10 g/cm^3

• D) 50 g/cm^3