Observations

Day 1

	Rain water	Acid Rain	Tap water
pH level	5	1	6
Brick
Concrete
Nail
Roof

Day 2

	Rain water	Acid Rain	Tap water
Roof Shingle	pH=5 No change	pH=1 Bubbles everywhere on glass and on roof shingle	pH=5 No change
Concrete	pH=5 No Change	pH=1 No change	pH=9 No change
Brick	pH=5 No change	pH=1 No change	pH=6 No change
Nail	pH=5 Rust formed on some spots, not as much as tap	pH= No change	pH= No change

Day 5

	Rain water	Acid Rain	Tap water
Roof Shingle	pH=5 Black particleson bottom of jar	pH=1 No change	pH=7 No change
Concrete	pH= 5 Black particles on bottom of jar	pH=2 no change	pH=7 cloudy water, film suspended around it, particles on bottom of jar
Brick	pH=5 Black particles on bottom of jar	pH=1 No change	pH=6 No change
Nail	pH=5 Black and orange particleson the bottom orange water	pH= White sandy particles on the bottom

Day 12

	Rain water	Acid Rain	Tap water
Roof Shingle	pH=6 White stuff in water	pH=1 Chopstick turned dark brown, white spots on shingle, part of shingle falling off	pH=7 Bubbles are gone.
Concrete	pH=6 Stuff falling off concrete	pH=4 little brown spots forming, little white spots forming, cloudy white stuff suspended	pH=6 No change
Brick	pH=5 Particles on bottom	pH=1 brown spots forming on stick/td>	pH=7 No change
Nail	pH=5 rust overlapping on nail, turned black, rust dropping falling on bottom, nail turned black	pH=2 water level fell, rust forming on top of nail where it wasn’t in water, spot on chopstick turned black, cloudy white stuff, floating bubbles of nail to surface, nail turned black	pH=6 rust falling to bottom, nail still shiny

Day 16

	Rain water	Acid Rain	Tap water
Roof Shingle	pH=6 no change	pH= 1 more brown spots stick, white cloudy stuff forming	pH= 6 no change
Concrete	pH=6 no change	pH=2 little white stuff forming then falling to bottom	pH= 2little white stuff forming then falling to bottom
Brick	pH= 6 no change	pH=1 no change	pH=6 tiny parts of brick falling off
Nail	pH=5 black particles, rust falling off and turning onto powder	pH=1 part of nail disintegrated, when I submerged rust fell off	pH=6 rust fell of and powder formed

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