• Please update your table of contents:
Page # Title Date
64-65 Physical/Chemical Properties and Changes 11/20/14
• Please take the sheet from the front cart.
▫ Fold the paper into a booklet and cut only on the dotted line.
▫ Attach this booklet to page 65.

• Around the room are sheets of poster paper with a substance on each.
• Brainstorm some characteristics that describe the substance and write them on the poster.
• You will have about one minute at each poster!

• With your new group, please organize the characteristics of your table’s substance into two categories.
• Write them in a T-chart on page 64:
Physical Properties Chemical Properties
(List of characteristics) (List of characteristics)
• Be prepared to defend why you grouped them the way you did!

• A physical property is a characteristic of a substance that can be observed without changing the substance into another substance.
• A physical change is a change in size, shape, form, or state of matter in which the matter’s identity stays the same.

• A chemical property is a characteristic of a substance that describes its ability to change into other substances.
• A chemical change is a change in the matter in which the substances that make up the matter change into other substances with new physical and chemical properties.

How can I tell the difference?!
1.
Can I (easily) change this substance back?
2.
Has a new/different substance been made by this change?

• Cut out all the pictures from the sheet and categorize them into your foldable by chemical and physical properties.
• Work and discuss with your group members to determine where each example belongs.

• malleability = Ability to be pounded out flat
• ductility = Ability to be pulled into wires
• elasticity = Ability to be stretched or compressed, then return to original size
• brittleness = Tendency to crack or break
• viscosity = A liquid’s resistance to flow
• density = Mass per unit of volume
• melting point = Temperature at which a substance goes from solid to liquid

• combustibility = Ability to sustain burning
• flammability = Ability to set fire
• reactivity = How easily a substance will react with another substance
• tendency to corrode = Tendency to react with oxygen to produce rust
• toxicity = The degree to which a substance can damage a living or non-living organism

• Is this a physical or chemical change?
1.
Ripping paper into smaller pieces
2.
Weathering
3.
Digestion of food in your stomach
4.
Cooking an egg