Properties of Matter

Mira is testing objects for her science experiment. She has a chart listing the mystery objects' densities, but no other information. She needs to calculate which object has a mass of 27g. If each object has an identical volume of 3cm, which object has a mass of 27 grams?

• A
• B
• C
• D

Mira is testing objects for her science experiment. She has a chart listing the mystery objects' densities, but no other information. She places each object in a large bowl of water in order to determine if any will float. Which of the objects, if any, will float?

• A
• C
• All objects will float
• No objects will float

Which of the following would increase the solubility of a solution of water and salt in a glass beaker at 22°C?

• cooling the solution to 10°C
• heating the solution to 30°C
• transferring the solution to a metal container
• decreasing the amount of water in the solution

How can you decrease the concentration of a solution?

• Pour out some of the solution
• Increase the amount of solvent
• Decrease the amount of solvent
• Increase the amount of solute

The graph below compares the density, in grams per cubic centimeter (g/cm3), of four different substances. Based on the information from the graph, which of the following best compares the physical properties of two of the substances?

• Substance X has less mass than substance Y has
• Substance W has less volume than substance X has
• Substance Y would have less mass than substance Z would have if they had the same volume
• Substance Z would have less mass than substance W would have if they had the same volume

Which conclusion about density can be drawn from this graph?

• Density if not always related to mass and volume
• Substances of different volumes have the same density
• It is less difficult to measure the density of liquids than of solids
• Equal volumes of different substances may have different densities

Tyra has four samples of metal, all with the same volume, but with different masses. Tyra also knows the densities in g/cm3, of certain metals. Which of Tyra's samples is copper (Cu)?

• Sample A
• Sample B
• Sample C
• Sample D

Miranda performed an experiment to determine what makes an object sink or float in water. She experiments with 10 different items and recorded the results. Which of the following is correct?

• The objects shape is the only determining factor
• The size of the object determines if it will sink or float
• The mass and volume of an object determine if it will sink or float
• Light colored objects tend to float more easily than dark colored objects

A student is given two different objects, a marble and a cube, that appear to be made of the same substance. The student did some measurements of the objects and recorded the measurements in the table. Using the student's measurements, determine if the two objects are made of the same material. The formula for density is D=M/V

• No. The objects are different substances because their masses are different
• No. The objects are different substances because their densities are different
• No. The objects are different substances because their volumes are different
• Yes, the objects are the same substance because they have the same density

Physical properties can be used to compare and classify substances. The process below demonstrates a physical property of sugar. Which of the following physical properties of sugar is demonstrated by the process?

• Solubility
• Density
• Thermal Conductivity
• Melting Point