Homework Practice

Printable assignment

Mixture Detective: Solutions, Suspensions and Colloids

Section A: Homogeneous and Heterogeneous Mixtures

Question 1mcq

A homogeneous mixture has:

A.Visible separate parts always

B.No particles

C.Only one element

D.Uniform composition throughout

Question 2mcq

Which is a heterogeneous mixture?

A.Sand in water

B.Air

C.Salt solution

D.Sugar solution

Question 3mcq

Air is usually considered a homogeneous mixture because:

A.It is a pure compound

B.It has only oxygen

C.Its gases are uniformly mixed

D.It has visible layers

Question 4mcq

Which mixture type has particles that settle on standing?

A.Pure substance

B.Suspension

C.Colloid

D.True solution

Question 5mcq

A mixture scatters light but does not settle quickly. It is most likely a:

A.Element

B.Colloid

C.Suspension only

D.True solution

Question 6mcq

A student says milk is a true solution because it looks uniform. The better classification is:

A.Element

B.Suspension always

C.Compound

D.Colloid

Section B: Properties of Solutions, Suspensions and Colloids

Question 7mcq

In a salt solution, salt is the:

A.Suspension

B.Residue

C.Solvent

D.Solute

Question 8mcq

In sugar dissolved in water, water is the:

A.Precipitate

B.Colloid

C.Solute

D.Solvent

Question 9mcq

True solutions usually do not scatter light because their particles are:

A.Very small

B.Settled at bottom

C.Visible grains

D.Very large

Question 10mcq

Suspensions can often be separated by:

A.Chromatography only

B.No method

C.Filtration

D.Magnetism always

Question 11mcq

The scattering of light by colloidal particles is called:

A.Crystallisation

B.Tyndall effect

C.Distillation

D.Osmosis

Question 12mcq

Muddy water is not a true solution because:

A.Mud disappears completely

B.It has no particles

C.Water is a compound

D.Mud particles can settle and be filtered