Chemical Change indicators
Fire
Bubbles
Light
Sound
Heat
Precipitate
Change in temperature – sometimes!!!
Change in color – sometimes!!!
Change in odor (after reaction) – sometimes!!!
Which of the following is a chemical reaction? Which of the following
is a physical reaction?
1) Freezing liquid Mercury
9) Lighting a match
2) Dropping a sliced
orange into a vat of
Sodium Hydroxide
10) Corroding Metal
Cutting a piece of paper into
two pieces
Shattering Glass
with a baseball
Filling a balloon with natural
air
Baking a cake
Adding yellow to blue to
make green
Fireworks Exploding
A bicycle rusting
Painting a wall blue
Scratching a key across a
desk
Making a sand
castle
Ice cream melting
A Macbook falling
out of a window
Frying an egg
Digesting carrots
Creating ATP in the human
body
Dropping a fizzy
tablet into a glass of
water
Cutting Diamonds
Burning Leaves
Crushing a pencil
Salt mixing in with
water
Salivary Amylase breaking
down food in the mouth