Acid Rain

In science we are looking at acid rain. Acid rain is formed when fossil fuels are burned releasing carbon dioxide, nitrogen oxides and sulfur dioxide into the atmosphere. They then mix with the water droplets making it more acidic then normal.

Equipment
Petri dish, blue litmus paper, bromothymol blue, universal indicator, leaf, apple piece, weigh boat, Calcium Carbonate, dropper,

Method

1. set up petri dish
2. Add one spatula of sodium sulfate to weight boat
3. Add 5 drops of sulfuric acid and quickly put lid on.
4. Watch and take photos

Observation

The blue litmus paper started changing first. It slowly faded from blue to red. The bromothymol blue started to change next going from blue to yellow to dark green. The universal indicator changed to a light red. The apple piece, leaf and Calcium Carbonate didn't have a noticeable change.

Gobstopper Experiment Writing

On Wednesday last week we had to eat and describe eating gobstoppers. Here is mine.

As the bag of colorful sphere came around I felt more and more scared. Mostly because the bag was full of gobstoppers. I have never had a gobstopper in my life and my mum has never let me have one because she says that it will make my teeth rot and I don’t want that to happen. I picked one up it was the colour of a lemon. It smelt of smarties and chewing gum.  I looked at the penny sized ball in my hand. It felt as hard as a diamond and smooth like a page in a book. Then Miss Mcleod told us to put it in our mouths. I didn’t want to eat it but my friend Lauren was saying it was ok to put it in my mouth so I did it. My mouth exploded with a taste of fruity mentos and smarties. After what seemed like 4 hours I took my gobstopper out now it was as small as a pea and was a different colour.  I took one last look at it then dropped it into a bin. “Bye bye little gobstopper” I thought to myself.