On Friday the 17th of January Rosanne from Lismore Science came over to give us a talk about the digestive system and chemistry. She first did the digestive system. First she put rice crispies in a bowl and we mashed them up with a spoon. After that she put in water which acted like saliva. Once it is all crunched up the food goes down the esophagus and into your stomach and stomach acid digests it. After digesting for 4 hrs it moves on and goes past your liver which produces bile. Bile takes the gastric acid out. It then goes into your small intestine which takes the minerals and vitamins in, then goes into your large intestine where it is waste. We then moved onto chemistry. We were learning about acids and bases. We used cabbage juice as an indicator. If a liquid turns red or pink when you put in the cabbage juice it is an acid. If it turns blue or green it is a base. She then showed us a Ph scale from 0 to 14. If it is a 7 it is neutral like water which is not an acid or a base. She put out liquids and we had to test them with the red cabbage juice. After that we made a chemical reaction by putting in vinegar and bread soda. We then did the same thing but this time we caught the gas. We put a glove over a cup and poured in the same thing and the glove blew up. It was a very interesting day and I enjoyed it. By Aaron 5th class.
On Friday the 17th Rosanne from Lismore Science came to teach us some science. First we did digestion, we started crushing rice crispies, it was quite hard because they were dry so Rosanne gave us some saliva which made it easier. Then she told us the food goes down the esophagus and then into the stomach (aka plastic bag) where we added gastric acid. We squished it around in the plastic bag to mimic the stomach churning. After that we put it back in the bowl and added bile which is made in the liver and it kills the acid from the stomach we also added pancreatic juices from the pancreas, then it went through the small intestine and then through the large intestine where we put it in a leg from tights.
We then had to squeeze out the juices and what was left was waste or the scientific name feces.💩
After lunch we did chemistry, we made a PH scale by adding red cabbage juice to different liquids to see whether they were acids or bases. We also added baking soda to vinegar and there was a chemical reaction. It all started to bubble and expand .
Then we put a rubber glove with baking soda in the fingers over a cup with vinegar in it. When we poured the baking soda in the glove inflated, we proved we made gas.🤩😍😛
By Moya Duffy 5th class
On Friday the 17th Lismore Sience came to the school to teach us about digestion and chemistry. First we did digestion, we started off with rice crispies, we crushed the rice crispies up like teeth and we added saliva and we mixed, after a while the food went down the esophagus and into the stomach and we added gastric acid and it turned orange. It looked disgusting, after a while of mixing we added bile and pancreatic juice and mixed. After that we put it into a tight and we had to squeeze it, Rosanne cut a hole in the tight and we squeezed it out and we were left with faeces.
After lunch we did chemistry. We made a PH scale 1-14, the acid is
1-6 and a base is 8-14. Rosanne gave us lots of liquid to try, we added cabbage juice to them and they turned different colours. Acid is reddish colour and a base is greenish colour.
After we had learned that, we put baking soda into vinegar and it fizzed up, next we put baking soda into a glove and put it onto a cup of vinegar and the glove inflated. After that we had to say goodbye to Rosanne and Stevie. I loved doing science.
By Darragh Joyce
On Friday the 17/1/20 Lismore Science came and taught us about the digestive system. At first we poured in rice crispies to a bowl.Then we tried to chop them up but it was too hard so Rosanne said to pour in cows saliva, it was fun but so weird, then she said how it goes down the esophagus. After that it went into the stomach and we poured in water with food colouring in it to represent acid and then we put it in a plastic bag and squished it to represent the stomach eating it. After that it went in between the stomach and the liver and that creates bile, after that it goes into the small intestine for a four hours then it goes into the large intestine. After all that the waste is left so it comes out in the toilet. After break we learned chemistry- about bases and acids, the acid is red and the base is blue. The teacher had boiled red cabbage to show us if the liquid was base, neutral or acid.She gave us each two liquids to see if it was base or acid. I got one acid and one base. When you mix acid, red cabbage and base it makes a chemical reaction. It was all so interesting and fun.
By Caroline Mc Donagh 🧪🧫
On Friday the 17th of January 2020 Lismore Science came and taught us about the digestive system. First we put rice crispies in a bowl we tried to crunch them with our spoons but it didn't do it that well so we got 2 glasses of water to represent saliva it was way easier to crunch them with our spoons this time. Then Lismore explained how it goes down the esophagus, after that it goes into the stomach and we poured in water with food colouring in it to represent acid and we put what we had after that in a plastic bag and squished it to represent the stomach eating it. After that it went in between the stomach and the liver and that creates bile, then it goes into your small intestine for a few hours. Then it goes in your large intestine and it comes out into the toilet. Then we had our lunch which I could barely eat because I was still thinking about the rice crispies. Next we did chemistry. We learned that if you boil a red cabbage and put it in a liquid it will show if it is a neutral, base or acid; there is a pH scale from 1 to 14. 1 to 6 is acid 8 to 14 is base and 7 is neutral. Lismore gave us a sheet with a pH scale on it and a few containers with liquid and we had to put them in order, it was really fun and I hope they come next year.
Senior Room Blog
Welcome to the 3rd to 6th class blog where we will keep you up to date with all our adventures!