Pure Substance and Mixture

Methane contains one atom of carbon and four atoms of hydrogen that are chemically bonded. It is a main component of natural gas. Methane is a . . . .

• pure substance

• mixture

Tags

NGSS.MS-PS1-1

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

Ocean water is a . . . .

• pure substance

• homogeneous mixture

• heterogeneous mixture

• compound

What is this?

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Tags

NGSS.MS-PS1-1

The example of a mixture is . . . .

• water and oil

• sand and water

• cereal and milk

• all of the above

If you were given two unknown SOLID, which tests should you do to identify if they are pure substance or mixture? (Choose 2 answers)

• Boiling Test

• Color Test

• Taste Test

• Melting Test

If you were given two unknown LIQUID, which test is the best test that you should do to identify if they are pure substance or mixture?

• Boiling Test

• Color Test

• Taste Test

• Melting Test

How would you know if the SOLID is a pure substance?

• It will melt at a range of temperature

• It will melt at a single temperature

• It will boil at a range of temperature

• It will boil at a single temperature.

Tags

NGSS.MS-PS1-4

The components of Pure Substance are always present in exact composition?

• TRUE

• FALSE

The components of the pure substances cannot be separated by physical means.

• TRUE

• FALSE