Sample Assessment Items s6

Sample Assessment Items This is not meant to be printed off and given as a test…this document is to give you ideas of how this standard might be assessed. Please use these as an example when you are developing your own formative assessments. Remember formative assessment is to be given throughout the teaching of a standard to help you guide your instruction based on students needs. A good formative assessment should have a mix of multiple choice as well as open ended.

S5P2 Students will explain the difference between a physical change and a chemical change. c. Investigate the properties of a substance before, during, and after a chemical reaction to find evidence of change.

Multiple Choice:

Cecil poured two liquids into a bowl. The liquids bubbled until all of the liquid was gone, and a solid remained in the bowl. What is the MOST LIKELYexplanation for what happened? a. The liquids combined to form a mixture. b. The liquids evaporated, leaving a solid. c. The liquids reacted chemically to form a solid. d. The liquids reacted chemically to form a gas and a solid. Answer: d

When bleach is poured on a shirt, what is the best sign that a chemical change takes place? a. The shirt does not change its mass. b. The shirt is no longer mixed with dirt. c. The shirt changes color under the bleach. d. The shirt becomes wet with the liquid bleach. Answer: c

Which of these produces a new substance that cannot be separated into its original components? a. air and steel produce rust b. water and salt produce salt water c. cocoa powder and milk make chocolate milk d. bananas, berries, and melons make fruit salad Answer: a

To make a cake, you combine flour, yeast, sugar and eggs. After mixing the ingredients, you place them in a pan in the oven to cook. When this mixture is placed in the oven, it expands (rises) and then gets firmer. The change the cake mix is undergoing is ______. a. a heat change b. a phase change c. a chemical change d. a physical change Answer: c

An old iron battery was discarded in this meadow. The iron in the battery is undergoing a ____ change as it rusts. The rusting is changing the battery's color from black to orange. a. physical b. chemical c. environmental d. none of these changes are occurring Answer: b Open ended:

How can I tell if matter has undergone a chemical change or a physical change?

How do pancakes change as they are cooked – chemically or physically? Explain.

Mr. Allen was testing for physical and chemical changes. First, he combined baking soda with vinegar and observed bubbles forming. Next, Mr. Allen put an ice cube in an empty glass and watched it melt. Complete the table below by identifying each change as physical or chemical, and give an explanation for each change.

Finally, Mr. Allen took a potato out of a bag. • Name a physical change that can happen to the potato.

Explain how you know that it is a physical change.

• Name a chemical change that can happen to the potato.

Explain how you know that it is a chemical change.