Homogeneous and Heterogeneous Mixtures

Homogeneous mixture has uniform composition throughout. What is the best description of a heterogeneous mixture?

• It could break down easily.

• We could easily see the particles.

• We could not easily see the particles.

• It could transfer the particles to another place.

Your science teacher showed in class a bowl of fruit and vegetables salad. Your classmate examined the mixture and was able to distinguish fruits from vegetables. What type of mixture was presented by your teacher?

• colloid

• heterogeneous (Non-Uniform)

• homogeneous (Uniform)

• solution

Homogeneous mixture is one of its classifications. Which is the following is a homogeneous mixture?

• oil and water

• mixed nuts

• pebbles

• seawater

Homogeneous mixture has uniform composition throughout. Which of the following mixtures which components are easily identified?

• juice drink

• hot coffee

• hot tea

• taho

When you mix water and salt completely, what type of mixture do you get?

• Homogeneous

• Heterogeneous

• Compound

• Simple

Which technique is commonly used to separate a solid from a liquid in a heterogeneous mixture?

• Filtration

• Evaporation

• Distillation

• Chromatography

Which technique is commonly used to separate a solid from a liquid in a mixture?

• Filtration

• Evaporation

• Chromatography

Student A tried to mix a tablespoonful of sugar in a glass of hot water. While Student B mixed the sugar with a glass of tap water. They tried to do this at the same time. What do you think will they observe on the two mixtures?

• The sugar dissolved faster in tap water.

• The sugar floated at the top of each solvent.

• The sugar dissolved faster in the glass of hot water.

• The sugar was not dissolved completely in the two set-ups they made.

Tags

NGSS.MS-PS1-4

Colloids are heterogeneous mixture that seem homogeneous because the solute particles in them can be evenly distributed by stirring and shaking. Which of the following groups of mixtures are examples of colloids?

• gelatin, blood, cloud

• dust in the air, fog, smog

• gravel and water, muddy water, sandy water

• salt solution, powdered juice and water, sugar solution

Colloid is another form of mixture. However, they are heterogeneous mixtures. Which of the following phrases best describes colloids?

• It is a homogeneous mixtures that seem to be heterogeneous.

• It is a heterogeneous mixtures that seem to be homogeneous.

• It is a suspensions that look like solutions.

• It is a solutions that look like colloid.