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Transcript 
Physical and Chemical
Changes
A Write On Activity
Objective: Chemical/Physical
Change: Differentiate

The learner will be able to
distinguish between a physical
and chemical change.
Examples of signs that are both
Chemical & physical




Gas production (can be a phase change
or a new substance)
Color change (can hold in a color like a
mixture or it could be a new substance)
Heat given off (simply hotter or could be
burning to give off heat)
Smell (can be expanding out or brand
new from a new substance)
Both of these examples are making a gas.
Which one is physical and which is chemical?
H2O in a liquid going into H2O as a
gas is a PHYSICAL Change
because it still H2O
Two different chemicals are being
added to create a new gas or
bubbles.
Like Baking Soda & Vinegar making
bubbles is a CHEMICAL change
Both of these pictures show a color change due
to heat: which is physical and which is chemical?

Paper burning is a
chemical change
because it is no longer
paper, but becomes ash

When metals (such as
steel) heat up they glow but
they are still the same
substance (still steal)
1. Is it a chemical or physical change?

Sugar dissolving
in tea
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Physical
Change
2. Is it a chemical or physical change?

Logs burning
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Chemical
Change
3.Is it a chemical or physical change?

Melting an ice cube to
become water.
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Physical
Change
4.Is it a chemical or physical change?

Cutting paper
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Physical
Change
5.Is it a chemical or physical change?

Crushing an
aspirin
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Physical
Change
6. Is it a chemical or physical change?

Metal rusting
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Chemical
Change
7.Is it a chemical or physical change?

Lighter fluid
burning
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Chemical
Change
8.Is it a chemical or physical change?

An egg rotting
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Chemical
Change
9. Is it a chemical or physical change?

An egg breaking
•Chemical Change
•Physical Change
OOPS!
Did it change size, color, shape (Physical
Change)?
or
Did it become different matter (Chemical
Change)?
Correct!
Physical
Change
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