Unit 2: Mixtures & Solutions

Multiple Choice

Which of the following best describes a mixture?

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

• A substance made of only one type of atom

• A combination where substances lose their original properties

• A liquid that dissolves everything added to it

Multiple Choice

Which of the following best describes a solution?

• A special kind of mixture where one substance dissolves evenly into another.

• A tool used to remove small pieces from a liquid or gas.

• A tool that attracts iron or steel.

• When a liquid changes into a gas, leaving solid particles behind.

Open Ended

What are some properties of matter that can be used to describe it?

Multiple Choice

Which of the following terms refers to taking apart substances in a mixture?

• Separate

• Filter

• Magnet

• Evaporation

Open Ended

Explain how evaporation can be used to separate a mixture. Give an example.

Multiple Select

Which tools can be used to separate mixtures based on their physical properties?

• Filter

• Magnet

• Evaporation

• Solution

Multiple Choice

Which of the following best describes what happens when a substance dissolves in a liquid?

• The substance breaks apart and spreads evenly in the liquid so it seems to disappear.

• The substance forms a layer at the bottom of the liquid.

• The substance floats on top of the liquid.

• The substance changes color.

Multiple Choice

What evidence shows that a substance is not soluble in water?

• The substance remains visible at the bottom of the glass.

• The substance disappears completely.

• The water changes color.

• The water becomes fizzy.

Multiple Select

Which of the following substances are soluble in water?

• Salt

• Sand

• Sugar

• Oil

Draw

Analyze Alex combines 15 grams of sugar and 100 grams of water.

After mixing, the sugar is no longer visible in the water. Explain what happened to the sugar. Then write the mass of the final mixture.