Maths

This week in maths we have been learning about Money. The main thing we have been learning about is  how to use your money and figure out the change and how much you have left.

Today in Business studies we had to build towers and out of the whole class, we had a challenge on who could build the biggest. We had a piece of paper and 1 meter of cellatap.

Copper coin experiment

Copper Coin experiment. 

- Clean coin in salt+vinegar solution

- Put 50ml 2moIL NoaOH into a beaker

- Heat on bunsen burner until  Nearly boiling - Stir as heating then take off the heat.

- Add a spatula of zinc powder

- Heatlitly for three minutes, with the coin in - Stir as heating

- Take a coin out with tong

- Rinse under water to remove chunks of zinc

- Wave coin in the blue flame using tongs

The 2 color changes were silver and gold.

When we mixed the Zinc and the Sodium Hydroxide it caused the coin to go silver, Then we added heat and it went gold. They all combined together 

Drill gauge

this tear we have been working on a dill gage here is a slide show on how you make one. I hope you enjoy