Science Lab Book
What are Physical Changes in
Matter?
Vocabulary
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
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;
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
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
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
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”.
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
How is a physical change different
from a chemical change?
Pages to review in your science text book.:
• Read page 130-137 “What is Matter Made of?”
• Read pages 144-149 “What are Physical Changes in
Matter?”
• Read Pages 158-163 “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”
Physical and Chemical Changes
Technology Work
• http://www.quia.com/quiz/303980.html
(physical & chemical change) - individual work
• http://www.harcourtschool.com/activity/hotp
late/ (melting and boiling points) - group