5 Questions
What type of changes affect the form of a chemical substance but not its chemical composition?
Physical changes
Which type of change involves the formation of new substances?
Chemical change
What is an example of a reversible change using physical means?
Evaporation of salt from water
Which property does not typically change in a physical change?
Chemical composition
What are examples of physical properties that can change during a physical change?
Melting, change of strength, textural change
Study Notes
Changes in Chemical Substances
- Physical changes affect the form of a chemical substance but not its chemical composition.
- Chemical changes involve the formation of new substances.
Properties of Physical Changes
- Chemical composition typically remains the same in a physical change.
- Examples of physical properties that can change during a physical change include:
- State (solid, liquid, gas)
- Shape
- Size
- Texture
Reversible Changes
- Melting of ice is an example of a reversible change using physical means (heating/cooldown).
Test your knowledge of physical changes with this quiz! Identify examples of physical changes, understand how they differ from chemical changes, and learn about their applications in separating mixtures.
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