P.S. 2.1 Matter Quiz

A(n) ______________ is a group of atoms of different elements held together by chemical forces.

• compound

• molecule

• element

• mixture

Pizza is one. Which item is also a heterogeneous mixture that is not evenly distributed?

• gasoline

• a polyester shirt

• water

• vinegar

Is this mixture of oil and vinegar miscible or immiscible?

• miscible

• immiscible

• both

• it depends on the temperature

Is a cup of black coffee miscible or immiscible?

• miscible

• immiscible

• both

• it depends on the temperature

Gases can dissolve with liquids in carbonated drinks. Is this mixture in the closed pepsi can homogeneous or heterogeneous?

• both

• neither

• heterogeneous

• homogeneous

Which item is a pure substance that has a fixed composition and definite properties?

• polyester shirt

• vinegar

• gasoline

• water

A _____________________ is a combination of substances that can be separated.

• property

• mixture

• pure substance

• compound

Salt is chemically combined and cannot be physically separated. What is it?

• heterogeneous mixture

• homogeneous mixture

• a pure substance

• a property

How many atoms are in 3 molecules of water or in other words 3H₂O ?

• 9

• 3

• 6

• 7

Every sample of matter is either an element, a compound, or a mixture. What is Ag (silver) ?

• an element

• a compound

• a mixture

• none of these