π Topic Summary
Physical properties are characteristics of matter that can be observed or measured without changing the substance's chemical identity. These properties include things like mass, volume, density, color, melting point, boiling point, and solubility. Experiments are crucial for determining and understanding these properties. By carefully designing experiments, scientists can gather data and make conclusions about the behavior of different materials.
π§ͺ Part A: Vocabulary
Match the following terms with their correct definitions:
- Term: Density
- Term: Solubility
- Term: Melting Point
- Term: Boiling Point
- Term: Volume
- Definition: The temperature at which a solid turns into a liquid.
- Definition: The amount of space a substance occupies.
- Definition: The temperature at which a liquid turns into a gas.
- Definition: The degree to which a substance dissolves in a solvent.
- Definition: The mass per unit volume of a substance ($ \rho = \frac{m}{V} $).
Answer Key:
- π Density - The mass per unit volume of a substance.
- π¬ Solubility - The degree to which a substance dissolves in a solvent.
- π‘οΈ Melting Point - The temperature at which a solid turns into a liquid.
- π₯ Boiling Point - The temperature at which a liquid turns into a gas.
- π Volume - The amount of space a substance occupies.
βοΈ Part B: Fill in the Blanks
Complete the following paragraph using the words provided:
(Mass, Volume, Density, Physical, Properties)
__________ properties are characteristics that can be observed without changing the substance. One example is __________ , which is the amount of matter in an object. Another is __________, which is the amount of space an object takes up. __________ is calculated by dividing mass by volume. It's a key ________ property to identify a substance.
Answer Key:
- π Physical
- π¬ Mass
- π‘οΈ Volume
- π₯ Density
- π Property
π€ Part C: Critical Thinking
Explain how you would design an experiment to determine if two different liquids have the same density. What measurements would you need to take, and how would you analyze the results?