Mixtures and Solutions Quiz

What happens to sugar when it is dissolved in water?

• It disappears completely and cannot be recovered.

• It changes into a different substance.

• It spreads evenly throughout the water but remains sugar.

• It makes the water freeze faster.

Tags

NGSS.MS-PS1-2

What is a mixture?

• A combination of two or more substances that form a new substance.

• A combination of two or more substances where each substance keeps its own properties.

• A liquid solution.

• A solid substance made from two elements.

What is a solution?

• A mixture where you can see all the different parts.

• A solid mixed with a liquid.

• A mixture where one substance is completely dissolved in another.

• A type of mixture that can't be separated.

Can the components of a mixture be separated by physical means?

• Yes, because they retain their own properties.

• No, because they form a new substance.

• Yes, but only by using chemical reactions.

• No, because they are permanently bonded.

What happens to the boiling point of water when salt is added to it?

• It decreases.

• It increases.

• It remains the same.

• It first decreases, then increases.

Tags

NGSS.MS-PS1-4

What is the term used to describe the maximum amount of solute that can dissolve in a solvent at a given temperature?

• Solubility

• Reactivity

• Density

• Viscosity

Why does stirring help to dissolve a solute faster in a solvent?

• It increases the temperature of the solvent.

• It decreases the solute's size.

• It helps to spread the solute particles throughout the solvent.

• It changes the chemical properties of the solute.

What is the role of temperature in the dissolving process of a solid in liquid?

• Higher temperatures always decrease the solubility of solids in liquids.

• Temperature does not affect the dissolving process.

• Higher temperatures usually increase the solubility of solids in liquids.

• Lower temperatures usually increase the solubility of solids in liquids.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What does it mean when a solution is saturated?

• It can dissolve more solute at the current temperature.

• It cannot dissolve more solute at the current temperature.

• It has not dissolved any solute yet.

• It is about to precipitate the solute.

Which of the following is an example of a mixture?

• Table salt (NaCl)

• Air