Physical and Chemical Properties

What physical properties are used to classify elements as metals?

• Color, smell, physical state

• Reactivity, streak, hardness

• Luster, conductivity, malleability

Determine the density of a sample of an unknown substance with a mass of 12 grams and a volume of 6 cm³. Density= Mass/Volume

• 10 g/cm3

• 1 g/cm³

• 2 g/cm³

Conductivity is a physical property of matter that describes its ability to

• be hammered and rolled into thin sheets.

• transfer thermal and electrical energy.

• reflect light from its lustrous surface.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Density is calculated by dividing the mass of a substance by its

• volume.

• length.

• temperature.

A piece of iron chain is left in water for a few days and changes color from gray to reddish brown. This color change is most likely an example of

• melting.

• rusting.

Tags

NGSS.MS-PS1-2

For an assignment, Ms. Allen has asked students to choose a material that will dissolve in a beaker of water. Which of the following would be the correct material to choose to meet the requirements of the assignment?

• Cement

• Oil

• Sugar

Tags

NGSS.MS-PS1-2

The word “luster” refers to the way a surface appears when it reflects light.

• True

• False

A sample is a good conductor of electricity. Burning the sample produces a gold flame. What is the identity of the sample?

• Zinc

• Tin

• Iron

Tags

NGSS.HS-PS1-3

Kool-aid is added to water and stirred until it completely dissolved. What happened to the Kool-aid powder?

• the powder disappeared and no longer exists.

• the powder is evenly distributed in the water.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Which metal object is attracted to a magnet?

• aluminum can

• stainless steel spoon

Tags

NGSS.MS-PS2-3