Physical and Chemical Properties Assessment

A student finds the mass and volume of four mystery liquids. The data is provided.

The student knows that the density of water is 1 g/mL. Which of the four mystery liquids can be correctly identified as water?

• W

• X

• Y

• Z

Tags

NGSS.MS-PS1-2

Which of the following is good evidence that an unknown sample is a pure substance?

• After leaving a liquid to settle, it separates.

• 
  After leaving a liquid to settle, it does not separate.

• 
  Multiple samples of the unknown substance melt at the same temperature.

• 
  Multiple samples of the  unknown substance melt at different temperatures.

The following liquids are poured into a glass jar. Which is the correct order, from top to bottom, of the column that would form?

• 
  Liquid C, Liquid A, Liquid B

• 
  Liquid C, Liquid B, Liquid A

• 
  Liquid B, Liquid A, Liquid C

• Liquid B, Liquid C, Liquid A

Tags

NGSS.MS-PS1-2

Which of the following are accurate headings for each column?

• 
  Column A = Physical Properties; Column B = Chemical Properties

• 
  Column A = Chemical Properties; Column B = Physical Properties

• 
  Column A = Observable Properties; Column B = Non-Observable Properties

• 
  Column A = Non-Observable Properties; Column B = Observable Properties

A table comparing four metals is provided.

A sample known to be one of the four listed in the table was heated to a temperature of 350ºC but remained a solid. The sample was found to have a density greater than 6 g/cm³ and to be a good conductor of electricity. Burning the sample produced a blue flame. Based on this information, what is the identity of this sample?

• Zinc

• Lead

• Tin

• Iron

Tags

NGSS.MS-PS1-2

An unknown substance has a volume of 6.7 cm³ and a mass of 75.7 g. Based on the information provided in the table below, what is most likely the identity of this substance?

What are examples of physical properties that can be used to describe substances?

How do mixtures differ from pure substances?