QUIZ IN SCIENCE 7

Solutions are composed of __________.

• salts and solutes

• solvents and salts

• solutes and alloys

• solutes and solvents

In a sample of saltwater solution, NaCl would be considered the ______.

• Solution

• Solute

• Solvent

• Solvation

When materials combine to form a mixture, they…

• always change their physical state.

   

• combine in a specific ratio.

• keep their original properties.

• react to form a new substance with new properties.

Air is a …

• compound

• element

• heterogeneous mixture

• solution

To make a solution more concentrated, add more…

• density

• solvent

• solute

• taste

What is a solvent?

• The substance that does the dissolving in a solution.

• The substance that is being dissolved in a solution.

• The mixing of different substances.

• The process in which neutral molecules lose or gain electrons.

Solubility is defined as …

• the ability to flame.

• the ability to be dissolved.

• the ability to crystallize.

• the ability to burn materials.

In the picture, a powder is about to be poured into the liquid. Which of the following should be done to make this powder dissolve faster?

• add more powder to the liquid.

• freeze the mixture.

• stir the powder in the liquid.

• store the mixture in a dark place.

A solution that is considered dilute would ...

• Dark in color

• Have a strong scent.

• Have a large amount of solute.

• Have a small amount of solute.

When a grape juice mix in water is dark in color and very sweet, it is a __________ solution.

• concentrated

• dilute

• heterogenous

• suspension