Transcript physical and chemical changes lab data

PHYSICAL AND CHEMICAL CHANGES LAB
ACTIVITY
OBSERVATIONS
BEFORE
OBSERVATIONS
DURING/AFTER
A
DEMO: Potassium iodide
with lead(II) nitrate
Clear, colorless,
odorless liquids
Bright yellow solid
B
Magnesium in Bunsen
burner
Silver, flexible ribbon
Bright light
White ash
C
Crushing chalk
Colored solid, hard
cylinder
Colored powder
D
Adding chalk to water
Colored powder;
clear, colorless liquid
Colored powder
throughout water;
chalk settled to
bottom with clear
liquid above
E
Combining baking soda
and vinegar
White powdered
solid; clear liquid with
strong odor
Bubbles and foaming
then clear liquid
F
Mixing sucrose and
water
White crystals; clear,
colorless liquid
Crystals disappear,
leaving clear liquid