Question 1

Compounds can be separated by

chemical means.

physical means.

boiling.

pressure.


Question 2

Oxygen, sulfur and tungsten are all examples of what type of matter?

Compound

Element

Heterogeneous Mixture

Solution


Question 3

A substance that has a uniform composition and is able to be separated by physical means is a(n)

solution.

heterogeneous mixture.

element.

compound.


Question 4

Which of the following can-not be separated by physical means?

Mixtures

Solutions

Elements

None of the above.


Question 5

Which of the following is a solution?

Steel

Milk

Plastic

Water



Question 6

A homogenous mixture of two or more substances is known as a(n)

element.

compound.

solution.

atom.



Question 7

Which of the following is an example of a heterogeneous mixture?

Water

Salt Water

Dirt

Brass



Question 8

Which of the following is not an example of separation by physical means?

Distillation

Sublimation

Boiling

Electrolysis



Question 9

Describe a procedure to separate a mixture of salt, sand, and water.


Question 10

List two ways in which heterogeneous mixtures differ from elements.


Question 11

How do scientists distinguish between an element and a compound? List two elements and two compounds.