Unit 3 Review Changes to Matter

Choose the words or phrases that make the sentence correct. A salad is a ______ because it is made of two or more substances that ______ be physically separated.

• solution, cannot

• mixture, can

• compound, cannot

• element, can

Students stir salt, sand, sawdust, and seashells into a jar filled with water. Which of the materials will form a solution?

• salt and water

• sand and sawdust

• seashells and water

• sawdust and seashells

The fifth grade class is learning about mixtures and solutions. The teacher writes four statements on the board. Which statement BEST describes a mixture?

• A. All components mix evenly.

• B. All components can evaporate.

• C. One component always dissolves into another.

• D. A mixture contains more than one substance.

Tags

NGSS.5-PS1-4

A family wants to separate a mixture back into its original parts. Which picture shows an action that separates the parts of a mixture?

• Burning a Log

• Cutting Paper

• Sharing a Drink

• Sifting Sand

Which term BEST describes the combination that Ted made when he added sand to water and stirred it?

• mixture

• solution

• element

• compound

Tags

NGSS.5-PS1-3

NGSS.5-PS1-4

Which BEST describes why Jessie can see the bands of nickel and copper on the edge of the quarter?

• because the copper and nickel formed a new element

• because the copper dissolved into the nickel

• because the quarter is a mixture

• because the quarter is a metal

Walter is investigating some properties of concrete. He pours a sample of dry concrete onto the ground. Walter observes that the concrete is made up of sand, pebbles, and bigger pieces of rocks. Which term BEST describes the dry concrete?

• compound

• element

• mixture

• solution

Which beaker contains a solution? A teacher stirs different solids into four beakers, as shown: Soil and Water, Rocks and Water, Sugar and Water, Oil and Water.

• Soil and Water

• Rocks and Water

• Sugar and Water

• Oil and Water

Tags

NGSS.MS-PS1-2

A chemist opens two bottles and pours the liquid from each bottle into separate containers. The chemist mixes the two liquids together to make a solution. Which picture BEST represents the solution of Liquid 1 and Liquid 2?

• Option A

• Option B

• Option C

• Option D

Tags

NGSS.MS-PS1-2

Bobbi placed some white salt crystals in a glass of water and stirred until the crystals disappeared. Then she left the glass on a sunny window sill. In a few days, all of the water evaporated. There were white crystals in the glass. What happened to the salt that Bobbi put in the water?

• The salt changed into a different type of white crystal.

• Tiny salt particles separated from one another and then came back together.

• The salt changed into water and then changed back in the sunlight.

• Salt crystals became invisible in the water and then were visible after the water evaporated.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4