Homework Practice

Printable assignment

Mixture Detective: Solutions, Suspensions and Colloids

Section A: Homogeneous and Heterogeneous Mixtures

Question 1mcq

A homogeneous mixture has:

A.Only one element

B.Uniform composition throughout

C.No particles

D.Visible separate parts always

Question 2mcq

Which is a heterogeneous mixture?

A.Sand in water

B.Salt solution

C.Air

D.Sugar solution

Question 3mcq

Air is usually considered a homogeneous mixture because:

A.It has visible layers

B.It is a pure compound

C.It has only oxygen

D.Its gases are uniformly mixed

Question 4mcq

Which mixture type has particles that settle on standing?

A.True solution

B.Colloid

C.Suspension

D.Pure substance

Question 5mcq

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

A.Suspension only

B.Colloid

C.Element

D.True solution

Question 6mcq

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

A.Colloid

B.Suspension always

C.Element

D.Compound

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.Colloid

B.Solute

C.Solvent

D.Precipitate

Question 9mcq

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

A.Visible grains

B.Very small

C.Very large

D.Settled at bottom

Question 10mcq

Suspensions can often be separated by:

A.Filtration

B.No method

C.Magnetism always

D.Chromatography only

Question 11mcq

The scattering of light by colloidal particles is called:

A.Osmosis

B.Crystallisation

C.Distillation

D.Tyndall effect

Question 12mcq

Muddy water is not a true solution because:

A.Water is a compound

B.Mud disappears completely

C.Mud particles can settle and be filtered

D.It has no particles