Water density

Greetings fellow Scientists!

Inspired by the “Water in the oceans” article in the latest edition of the Catalyst magazine, we decided to test out an experiment described there. 

The article talks about the salty water in the oceans and the fact that it can either mix quickly, slowly or not at all. We conducted an experiment called “Mixing fresh and salty water”. We started with two cups of water. In one, we dissolved salt up until the point we reached a saturated solution. Second cup had no salt at all. We also added two different food colourings to see if the fresh water would mix with the salty water. 

As you can see, when we tried to mix the two waters together, we got two separate layers. Why? Think density J the fresh water is less dense than the salty water.

Try this experiment yourself!

Book of Achievements

Greetings fellow Scientists!

In today's session we had a look at the tasks in the Book of Achievements that we are completing as a part of the work we do in our club.

Would you like a credit or LOC? Challenge yourself and complete some of the tasks! See Miss Ochwat in SC3 for more details.

How good are the indigestion remedies?

Greetings fellow Scientists!

In our today's session we decided to test the following hypothesis: indigestion remedies bought from a chemist are better than using baking powder or bicarbonate of soda. 

We used the litmus paper and pH probes to check the pH of the hydrochloric acid and see if neutralization occurred. 

We concluded that Rennie was the best at neutralizing the acid.

Today's session was special as the co-ordinator from our partner school, Mrs Grażyna Ochwat, paid us a visit.