Eighth Grade Science Quiz

Which of the following is a homogeneous mixture?

• Sand and water

• Oil and water

• Salt and water

• Mud and water

What is the solvent in a saltwater solution?

• Salt

• Water

• Both salt and water

• Neither salt nor water

Which of the following is NOT a property of acids?

• Sour taste

• Turns blue litmus red

• Slippery feel

• Reacts with metals to produce hydrogen gas

What is the pH level of a neutral solution?

• 0

• 7

• 14

• 1

Which type of mixture is a colloid?

• A mixture where particles settle over time

• A mixture where particles are evenly distributed but do not settle

• A solution with a solute and solvent

• A pure substance

Which process is used to separate a mixture of sand and salt?

• Filtration

• Distillation

• Chromatography

• Evaporation

A solution that can no longer dissolve any more solute at a given temperature is called:

• Unsaturated

• Saturated

• Supersaturated

• Dilute

What affects the rate of dissolving?

• Temperature

• Surface area

• Stirring

• All of the above

In a soda, carbon dioxide is the:

• Solute

• Solvent

• Solution

• Suspension

What is a characteristic property of bases?

• Sour taste

• Bitter taste

• Turns red litmus blue

• Both B and C