1. Physical and Chemical Changes Lab
ACTIVITY
OBSERVATIONS
BEFORE
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