Exploring Properties and Phase Changes- Honors

Identify the number of significant figures in the measurement 0.00450.

• 2

• 3

• 4

• 5

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DOK Level 1: Recall

Which of the following is a chemical property?

• Melting point

• Density

• Reactivity with acid

• Boiling point

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DOK Level 1: Recall

Determine the number of significant figures in the measurement 123.450.

• 4

• 5

• 6

• 7

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DOK Level 2: Skill/Concept

Which of the following is a physical change?

• Rusting of iron

• Burning of wood

• Dissolving sugar in water

• Baking a cake

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DOK Level 2: Skill/Concept

Explain why boiling water is considered a physical change and not a chemical change.

• Because it involves a change in temperature

• Because it involves a change in state but not in chemical composition

• Because it produces bubbles

• Because it requires heat

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DOK Level 3: Strategic Thinking

Which phase change is represented by the process of water vapor turning into liquid water?

• Freezing

• Condensation

• Evaporation

• Sublimation

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DOK Level 1: Recall

Given the measurement 0.007890, identify the number of significant figures.

• 3

• 4

• 5

• 6

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DOK Level 2: Skill/Concept

Compare and contrast the physical and chemical properties of water and hydrogen peroxide.

• Both have the same boiling point

• Both are colorless liquids, but hydrogen peroxide decomposes into water and oxygen

• Both have the same density

• Both are used as solvents

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DOK Level 3: Strategic Thinking

Which of the following phase changes requires the addition of energy?

• Freezing

• Condensation

• Deposition

• Melting

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DOK Level 2: Skill/Concept

Explain the reasoning behind why dissolving salt in water is considered a physical change.

• Because the salt changes its chemical composition

• Because the salt and water form a new substance

• Because the salt can be recovered by evaporating the water

• Because the salt disappears completely

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DOK Level 3: Strategic Thinking