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Questions and Answers
Which of the following is an example of a size-dependent physical property?
Which of the following is an example of a size-dependent physical property?
- Weight (correct)
- Solubility
- Density
- Melting Point
What best describes a chemical change?
What best describes a chemical change?
- It involves a change in position or state.
- It only alters the appearance of a substance.
- It results in new substances with different properties. (correct)
- The original substance can be recovered.
Which of the following statements is true regarding physical properties?
Which of the following statements is true regarding physical properties?
- They involve changes that create new substances.
- They are limited to solid materials.
- They only include size-dependent properties.
- They can be observed without changing the substance's composition. (correct)
Which of the following is NOT a size-independent physical property?
Which of the following is NOT a size-independent physical property?
Which of the following describes flammability?
Which of the following describes flammability?
Which of the following properties measures the amount of mass per unit of volume?
Which of the following properties measures the amount of mass per unit of volume?
Which property indicates a liquid’s resistance to flow?
Which property indicates a liquid’s resistance to flow?
What occurs during a physical change?
What occurs during a physical change?
Flashcards
Physical Property
Physical Property
A property of matter that describes its appearance or how it behaves, but doesn't change its chemical composition.
Chemical Property
Chemical Property
A property of matter that describes how it reacts with other substances, resulting in a change in its chemical composition.
Physical Change
Physical Change
A change in the form or appearance of a substance without changing its chemical composition. It's often reversible.
Chemical Change
Chemical Change
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Solubility
Solubility
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Conductivity
Conductivity
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Density
Density
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Viscosity
Viscosity
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Study Notes
Physical Properties
- Definition: Characteristics of matter that can be observed or measured without changing its identity.
- Size-dependent: These properties depend on the amount of matter in a sample. Examples include mass, weight, and volume.
- Size-independent: These properties do not depend on the amount of matter in a sample. Examples include color, luster, state of matter, melting point, boiling point, solubility, conductivity, density, malleability, hardness, and viscosity.
Chemical Properties
- Definition: Characteristics of matter that can only be observed as it changes to a different type of matter.
- Examples: Flammability, reactivity with oxygen, reactivity with sulfur, acidity.
- Observation: Observing chemical properties requires a change in the substance, e.g., burning something or reacting it with something else.
Physical Changes
- Definition: A change in the form or appearance of a substance without forming a new substance.
- Characteristics: Reversible
- Examples: Melting ice, dissolving sugar in water, tearing fabric.
Chemical Changes
- Definition: A change in a substance that produces one or more new substances with different properties.
- Characteristics: Irreversible.
- Examples: Burning wood, rusting iron, baking bread.
- Indications of Chemical Change: Color change, gas production (bubbles, smoke, etc.), change in odor, emission of energy (heat, light, sound).
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