Acid & Base

Acid Rain

Aim-To make acid rain

Equipment- Petri dish, Weigh boat, Universal indicator, Bromothynol blue, Calcium carbonate, Petal, Blue litmus, Apple, Sodium sulfate, Sulfuric acid.

Method-

1.Gather all the equipment together.

2.Get the Petri dish and place the weigh boat into the center

3.Now place the Universal indicator, Bromothynol blue, Calcium carbonate, Petal, Blue litmus, 4.Apple around the outside of the petri dish

5.Put in a spatula of sodium sulfate & a few drops of sulfuric acid into the weigh boat.

6.Then quickly close it up with the lid and wait for them to change  

Observation- Before it was added the sodium sulfate & the sulfuric acid, we took note on what this products before & after effect was. The effect on this products was they changed colour and texture

What substance	Before	After
Universal indicator (liquid)	Light Green	Red
Bromothymol blue (liquid)	Dark Blue	Yellow
Calcium carbonate (powder)	White Powder	Nude Chalky texture
Petal	Green	The edges turned a little red
Blue litmus (paper)	Blue	Pinky/red colour
Apple	Juicy yellow apple	Loss of moisture, went dry

Discussion-

-These products such a Universal indicator, changed to a Red/pink colour meaning that it was and acid based product, 

-Bromothynol blue was a dark blue colour but after the acid rain it changed to a vibrant yellow therefore it was an acid 

-Calcium carbonate this substances is netheir and acid of base product.

-Only the edges of the petal changed are colour which was a pinky/red but it int no acid or base

-Blue litmus paper started of as blue obviously but the after the acid rain encounter its changed to a red therefore it is an acid

Apple had a different reaction than the rest of this substances so it neither and acid or base cause there was no colour changed involved

Conclusion

This experiment was very interesting to do. I really enjoyed being able to watch these substance change colour and textures. Acid Rain was and overall blast and I wouldnt change anything ong