LP 1.2
- I can identify physical and chemical properties of matter and use these properties to identify substances

physical property
chemical property
states of matter (solid, liquid, gas, plasma)
intensive properties
extensive properties

GS 2b, 2c: Investigations - Students can design and conduct appropriate scientific investigations.

GS 4a, 4c: Data Analysis and Interpretation - Students can analyze and interpret scientific data and solve problems using a range of tools, technology and mathematical techniques.

GS 5a, 5b, 5d: Explanation and Argumentation - Students can develop evaluate and critique scientific claims/explanations, arguments and solutions based on evidence from the natural and designed world.

By the end of this lesson, students will be able to:

Student will learn the difference between physical and chemical properties in order to differentiate between the two.
They will also be able to identify intensive and extensive properties of matter while recording qualitative and quantitative properties of matter.
Lastly, students will be able to record what properties are most helpful in determining the identity of a substance.

https://docs.google.com/document/d/1siFIsOAs45CxuUlyJt9dNRdT70eTva14fJMeE1qXHPk/edit?usp=sharing

Properties of Matter Assessment

Multiple Choice Questions (2 points each)

1. Which of the following is a physical property? A. Reactivity with acid B. Melting point C. Ability to rust D. Flammability
2. An intensive property is one that: A. Depends on the amount of substance present B. Can only be measured with special instruments C. Does not depend on the amount of substance present D. Can only be observed, not measured
3. Which list contains only chemical properties? A. Density, color, melting point B. Rusting, flammability, reactivity with acids C. Mass, volume, length D. Boiling point, hardness, malleability
4. If you cut a piece of copper wire in half, which property will change? A. Density B. Mass C. Melting point D. Color
5. Which property is extensive? A. Temperature B. Volume C. Density D. Boiling point

Short Answer Questions (4 points each)

6. Explain the difference between physical and chemical properties. Provide two examples of each.
7. A student has two clear liquids in separate beakers. How could they determine if the liquids are different substances using only physical properties? List at least three methods.
8. Why is density considered an intensive property? Explain using a specific example.

Data Analysis (6 points)

9. Given the following data for three unknown substances: Substance A:
   • Melting point: 0°C
   • Density: 1.0 g/mL
   • Clear liquid at room temperature
   • No reaction with acid
   Substance B:
   • Melting point: 801°C
   • Density: 2.16 g/mL
   • White crystalline solid
   • No reaction with acid
   Substance C:
   • Melting point: 0°C
   • Density: 1.0 g/mL
   • Clear liquid at room temperature
   • Reacts with acid producing bubbles

a. Which properties listed are intensive properties? b. Which substances could be the same? Explain your reasoning. c. What additional test could you perform to distinguish between substances A and C?

Application Question (8 points)

10. You are a materials scientist designing a new cooking pot. a. List four important physical properties the material should have. b. Explain why each property is important for this application. c. Identify two chemical properties that would make a material unsuitable for this use. d. Explain how these properties could cause problems.

Matching (1 point each)

Match the property with its correct classification:

11. ____ Mass A. Physical and intensive
12. ____ Reactivity with oxygen B. Physical and extensive
13. ____ Boiling point C. Chemical and intensive
14. ____ Surface area D. Chemical and extensive

True/False (1 point each)

Explain why each false statement is incorrect.

15. All physical properties can be measured without changing the identity of the substance.
16. Chemical properties can only be observed when a substance undergoes a chemical reaction.
17. Extensive properties are not useful for identifying substances.
18. The temperature at which a substance melts is an extensive property.

Bonus Question (2 points)

19. Explain how understanding both intensive and extensive properties could help you determine if a gold necklace is genuine gold or just gold-plated.

Total Points: 50 (plus 2 bonus points)