Chemistry Unit

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Chemistry Unit

• Unit 1
• Section 1 Describing Matter

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Discovery Activity

• Groups of Two Examine items.
• 1. Identify
• 2. Organize items into two groups using
  characteristics properties of items.
• 3. Reorganize items using another
  characteristic property.
• 4. Write group organization patterns on board.
• 5. Identify items that are single substances.

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Characteristics of Matter
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Section 1 Terminologypage 3,4,5,6 from lab manual
occupies space and has mass

• Matter

property that never changes and can be used for
identification.
Characteristic properties
Physical Properties
Can be observed or measured- no change in
substance
Chemical Properties
How a substance reacts chemically- change in
substance
Physical changes
alter the form of the substance but not its
identity.
Chemical changes
a change in the chemical composition of the
substance.
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ice, water, boiling water

• Questions
• 1. Name a characteristic property of water?
• 2. Is the phase change between solid, liquid and
  gas a physical or chemical change? Why?
• 3. Explain why waters boiling point and melting
  point can be used for the identification of
  water.
• 4. How could you change water to alter its
  characteristic properties?

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Section 1 Concept map
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Heterogeneous vs. Homogeneous Mixtures
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What is a Mixture?
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Solutions
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Elements and Compounds
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Building Vocabulary
C

• ____ 1. an element a. Two or more substances
  mixed together but not chemically
  combined kool aid
• ____ 2. a pure substance b. two or more elements
  chemically combined table salt
• c. cannot be broken down into other
• ____ 3. mixture substances by chemical or
  physical means carbon
• ____ 4. a solution d. made of only one kind
  of matter with definite properties
  copper
• ____ 5. a compound e. a very well-mixed
  mixture sugar water

D
A
E
B