Physical and Chemical Changes Flashcards

Study Notes

Overview of Changes

Changes can be classified into two main types: chemical changes and physical changes, each with distinct characteristics.

Chemical Changes

Burning
- Represents a chemical change due to the transformation of substances into new materials with different properties.
Spoiling Milk
- Indicates a chemical change as bacteria alter the composition and qualities of the milk.
Boiling
- While often thought of as a physical process, boiling can be considered a chemical change when it involves the alteration of the substance, particularly in some food preparations.
Chemicals Changing Colors
- A clear example of a chemical change where the original substances undergo a transformation leading to a different appearance.

Physical Changes

Mixing Paint
- A physical change as it combines substances without changing their chemical identities.
Freezing
- A physical change whereby a liquid becomes solid without changing its chemical composition.
Melting
- Represents a physical change where solids transform into liquids while retaining their original chemical structure.
Sublimation
- A physical change that involves a substance transitioning from solid to gas without passing through the liquid phase.
Condensation
- A physical change occurring when a gas turns into a liquid, such as water vapor forming droplets.
Leaves Changing Color in the Fall
- Although often viewed as a physical change, this process reflects chemical changes in chlorophyll and other pigments within the leaves.

Description

Test your knowledge of physical and chemical changes with these informative flashcards. Each card provides a word associated with a change and its classification, enhancing your understanding of these key concepts. Perfect for students learning about the basics of chemistry.