SCIENCE REVIEW 501 GOAL 02

1. A group of students placed iron filings and sand in a jar. One student put the lid on the jar. Another student shook the jar. What did the group make?

• A. a particle

• B. a mixture

• C. a solution

• .D. a component

Harry places three pieces of ice in a glass of water for a demonstration.

• A. The ice water is a solution because the parts are easily separated

• B. The ice water is not a solution because the parts are mixed easily..

• C. The ice water is not a solution because the parts are easily separated.

• D. The ice water is a solution because the parts are mixed easily).

Sophia measured the mass of both substance X and substance Y. She then combined the two substances. When Sophia combined the substances, a new color formed. She measured the mass of the new substance and recorded the data in the table shown. Which explains why the mass of X and Y combined is the same mass as the new substance XY?

• A. chemical change

• B. physical change

• C. color change

• D. law of conservation of matter

Write whether each step in the recipe is a physical change

• A. Roll dough

• B. Bake pizza

• C. Let dough rise

• D. Bake dough

Write whether each step in the recipe is a chemical change

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Emma placed a canned liquid drink in a freezer. She removed the can 12 hours later. The pictures show the can before and after Emma put it in the freezer. Which best explains what Emma observed?

• A. The liquid in the can changed and is now a different substance.

• B. The liquid in the can froze and expanded when it became a solid.

• C. The liquid in the can melted, causing it to flow out of the container.

• D. The liquid in the can evaporated, causing some of the liquid to be lost.

4. Keisha finds and records the mass of substance X. Then she places the substance in a freezer until the substance freezes. She then removes substance X from the freezer and finds and records the mass again. Which set of data did Keisha most likely record?

• A. Mass before freezer: 850 grams and mass after freezer: 450 grams

• B. Mass before freezer: 950 grams and mass after freezer: 900 grams

• C.. Mass before freezer: 850 grams and mass after freezer: 850 grams

• D. Mass before freezer: 400 grams and mass after freezer: 850 grams

Keisha’s teacher placed a substance in a jar for Keisha to observe. The teacher labeled the jar substance X. The table shows Keisha’s observations. Which conclusion is supported by Keisha’s observations?

• A. Substance X is a gas

• B. Substance X is a solid

• C. Substance X is a liquid.

• D. Substance X is a solid and a liquid.

The picture shows Anya’s lunch tray. Which three items on Anya’s lunch tray are solids?

• A. Pizza, milk and apple

• A. Pizza, mushrooms and apple

• C. Pizza and juice

• D. Apple and coffee

Look at the picture. Which states of matter are shown in the picture? Select all that apply.

• A. Solid, liquid and gas.

• B. Solid and liquid

• C. Liquid and gas.

• D. Solid and gas