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Standard 4.0 Chemistry

Topic D. Physical and Chemical Changes

Indicator 1. Provide evidence to illustrate that when a new material is made by combining two or more materials, its properties are different from the original materials.

Objective a. Investigate and describe what happens to the properties of materials when several materials are combined to make a mixture, such as table salt and pepper; various kinds of nuts, chocolate pieces, and coconut; sugar dissolved in milk

Selected Response Item

Science students observed the physical properties of different materials. They recorded their observations in the data table below.

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The students then combined baking soda with some of the materials. Their observations are in the data table below.

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What happened to the properties of the baking soda and the salt after the two materials were mixed together?

  1. The properties of the baking soda and salt changed.
  2. The properties of the baking soda and salt did not change.
  3. The properties of the baking soda changed, but the properties of the salt did not change.
  4. The properties of the baking soda did not change, but the properties of salt changed.
/share/assessment_items/xml/items/msa_science_5_049.xml

Correct Answer:
B

Brief Constructed Response (BCR) Item

A student mixes water, a powdered drink mix, and sugar to make a flavored drink.

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Explain what happens when the materials are combined to make a mixture. In your explanation, be sure to include

  • the properties before they are mixed
  • how the properties were affected

Write your answer in the space provided.

Properties Before Mixing

________________________________________________

________________________________________________

Properties After Mixing

________________________________________________

________________________________________________

/share/assessment_items/xml/items/msa_science_5_055.xml

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Selected Response Item

Mixing sugar, water, and lemon juice makes lemonade.

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Which of the following statements best describes the properties of the materials after mixing the lemonade?

  1. The materials develop all new properties.
  2. The materials kept all of their original properties.
  3. The materials kept many of their physical properties.
  4. The materials changed most of their physical properties.
/share/assessment_items/xml/items/msa_science_5_006.xml

Correct Answer:
C