Interpret the results of an investigation to determine whether a physical or chemical change has occurred.

1
820

• Interpret the results of an investigation to
  determine whether a physical or chemical change
  has occurred.

2
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• Key concepts/skills
• Level 1 Define key vocabulary.
• Level 2 Identify the chemical and physical
• properties of matter.
• Level 3 Distinguish between physical and
• chemical changes given
  investigations
• or situations.

3
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• Key vocabulary
• Physical properties flammability
• Physical change reactivity
• Chemical properties
• Chemical change

4
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• Physical Properties
• Size, Shape, Color, Odor, Texture, things that
  can be observed with senses
• Change of state, malleability, ductility,
  conductivity
• All Physical properties change during a chemical
  reaction
• Physical Properties gt New Physical Properties

5
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• II. Chemical Properties
• Flammability how easily a substance burns
• Reactivity how easily a substance reacts with
  others
• A substances chem. props. Going into a reaction
  change completely and the substance coming out of
  the reaction has new chemical properties
• D. Chem Props. gt New chem. Props

6
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• III. Physical changes
• A change in physical properties without changing
  the identity of the substance (paper is still
  paper)
• Note phys props. change but not chem. props.

7
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• Chemical Changes
• When one or more substance changes into new
  substances with new chem. and phys. props.
• Note Chem. and Phys. props change with a chem.
  Change
• Chem. Changes are not reversible by any physical
  means

8
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• 1. Is gas, heat, or light given off?
• If Yes Chemical
• 2. Does the substance maintain its identity?
• If yes physical
• 3. Are more than 2 physical properties changed?
• If yes chemical

9
Interpret the results of an investigation to
determine whether a physical or chemical change
has occurred.

• Chemical or physical change?