1. What are Physical Changes in Matter?
Science Lab Book
What are Physical Changes in Matter?

2. Vocabulary Matter – is anything that has mass and takes up space
Define & illustrate:
Matter – is anything that has mass and takes up space
Solid – particles locked in place, although still vibrating (ice)
Liquid – particles close to each other; move quickly and slide past each other quickly (water)
Gas – particles are far apart and moving quickly
Physical change – is a change that does not result in a new substance
Change of state – occurs when a substance changes from one state to another
Mixture – is two or more substances that are combined without being changed

3. Vocabulary
Read pages 148 – 149
Brain Pop: Compounds and Mixtures
Compound – a substance made of two or more kinds of atoms that are chemically combined
Examples: Sulfur reacts with oxygen to form sulfur dioxide (substance burns). Iron reacts with oxygen in the presence of water to form rust. Sulfur in the match head is what helps the match light quickly (burning).
Mixture – is two or more substances that are combined without being changed
Examples: Trail mix; salads; salt water; fog; air; sand; soil; lemonade; chocolate milk;

4. Vocabulary
Melting point – the temperature at which a solid changes state into a liquid
Boiling point – the temperature at which a liquid changes state into a gas
Freezing point – the temperature a which a liquid changes state into a solid
Evaporation – a liquid slowly turning into a gas
Condensation – a gas turning into a liquid

5. Physical Change
Write and illustrate everything you know about a physical change. (Use your textbook as a reference.)
Physical Change – is a change that does not result in a new substance

6. Evidence that could be present to indicate a physical change:
No new substance has been created
Change of shape (cutting a piece of paper)
Change of state (going from a solid to a liquid such as ice to water vapor)
Change in size
Mixture (trail mix)
Solutions (salt dissolving into water)
Dissolving

7. Chemical Change
Write and illustrate everything you know about a physical change. (Use your textbook as a reference.)
A chemical change (chemical reaction) is a change that results in one or more new substances.
Reacts means “goes through a chemical change”.

8. Evidence that could be present to indicates a chemical change:
New substances are produced with physical properties different form the starting substances
Change in color (bread baking and changing form white to brown)
Smell (rotten eggs)
New physical property (iron rusting)
Substance given off (sulfur burning on a match)
Gas being produced (bubbles)
Light or heat being given off
More examples: silver tarnishes, candles burn (both chemical and physical change), milk sours, toast browns, battery acid eats cloth, steel rust, campfire

9. How is a physical change different from a chemical change?
Pages to review in your science text book.:
Read page “What is Matter Made of?”
Read pages “What are Physical Changes in Matter?”
Read Pages “What are Chemical Changes in Matter?”
Class Work Review: Power Points:
“Chemical Change”
“Name that Change”
“Chemical and Physical Changes?”
“Physical and Chemical Changes A Write on Activity”

10. Physical and Chemical Changes
Technology Work
(physical & chemical change) - individual work
(melting and boiling points) - group