Unit 1: Properties of Matter (AKS 2a,2b) Remediation

Scientists organize the characteristics of matter into two categories: chemical or physical. Which of the following is best described as a physical property? (AKS 2a, DOK 2)

• luster (shine of metal)

• flammability

• reactivity

• burning

Scientists organize the characteristics of matter into two categories: chemical or physical. Which of the following is best described as a chemical property? (AKS 2a, DOK 2)

• luster (shine of metal)

• flammability

• malleability (ability to be molded)

• boiling point

When water is placed on the stove, the water gains energy and changes phase from liquid to gas. What type of change occurs and what is the best explanation? (AKS 2a, DOK 2)

• Physical change, because the substance can be reversible. The water is still water whether it is a solid, liquid, or gas.

• chemical change, because the substance can be reversible. The water is still water whether it is a solid, liquid, or gas.

• physical change, because the substance is changed to another substance during the increase in energy.

• chemical change, because the substance is changed to another substance during the increase in energy.

Which statement below is correct?

• a property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed. (ex. combustibility)

• a property that is measurable, describes changes or properties that are momentary states. They are observable. (ex. flammability)

• a property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed. (ex. malleability)

• a property that is measurable, describes changes or properties that are momentary states. They are observable. (ex. reactivity)

Identify the figure below that represents accuracy.

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Which figure below is showing precise but not accurate?

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________________ is a physical property.

• ability to react with acid
•  state of matter
• flammability
• ability to react with oxygen

The  smaller cube is more likely to float in water than the larger cube, why?

• True, because the mass is smaller and volume is same.
• True, because the mass is smaller and volume is same.
• True, because the mass is smaller and volume is smaller.

Real Life Application: When we have the extended family come for a meal at our house, my mom always brings out the fancy silverware.  It's quite an ordeal because they are stored in a special box so that they don't tarnish.

• physical property
• chemical property

Real Life Application: In the attic, my dad has some of my great-grandparents' belongings.  I noticed that some of their old letters had started to turn yellow.  My dad said it was because of the sunlight that came through the window.

• physical property
• chemical property