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Showing posts with label Sci2019. Show all posts
Showing posts with label Sci2019. Show all posts

Monday, 1 July 2019

Metal Carbonates

Aim: To show that carbon dioxide gas is produced when a metal carbonate reacts with acid.

Method:
1. Light your Bunsen Burner
2. Add a 'pea-sized'  amount of metal carbonate into one of the boiling tubes.
3. Place this boiling tube into a test tube rack. Ensure you have the bung and delivery tube ready.
4. Add 5 mL of acid to the boiling tube and quickly insert the bung and delivery tube ready.
5. Holding the other boiling tube with your tongs, capture the gas produced as shown in the diagram below.
6. When you think the tube is full, your lab partner should light a wooden splint.
7. Carefully remove the boiling tube from under the delivery tube, taking care to keep it facing upright.
8. Insert the burning splint into the mouth of the test tube.

Observations:
When acid was added it started to bubble.


Tuesday, 2 April 2019

Thinking about cloning

   1. Cloning endangered/extinct animals?

I neither agree or disagree with cloning endangered/extinct animal. If the animal in endangered than cloning is all right but only if it is human caused.  If they are extinct than there are no others of there species to teach them how to act and find food.

  2. Cloning highly productive plants and animals

I agree with this because if we have apple trees that grow more apples than others apple trees would clone that apple tree to save room on more.

  3.  Cloning should be used to replicate a child that is dying.

I Disagree with this because cloning another child would not save his or her life. You are only creating another person that looks like the dying person.



Tuesday, 19 March 2019

Alan G MacDiarmid


Who is Alan Graham MacDiarmid

Alan Graham MacDiarmid was a New Zealand-born American chemist, and one of three recipients of the Nobel Prize for Chemistry in 2000. Died in 2007

What did he do

He studied in the field of Chemistry. His best-known research was the discovery of conductive polymers were he worked alongside with the Japanese chemist Hideki Shirakawa and the American physicist Alan Heeger. They published the first results in 1977. This work also got him a Nobel Prize