Science Topic 8 Acids and Bases

 Today we went to Tamaki College to learn science. First of all we labeled each item we will be testing on a well plate. Then measure about 4 or 5 drops of each substances into the well plate and mark it for that item. Next we took 10 difference strips of litmus paper, so that we can test at least nine substances. Then we predicted  are result before we tested are experiment, to see what we think what the litmus paper colour will change into. After that we took one small piece of red and blue litmus paper, dipped it into one of the substances to be tested. As we dip it in one of the substance, we wrote down what colour the litmus paper changed. Finally we finished testing, we wrote down all of the results and packed and went back to school. What I learned that if you put red litmus paper in a base substances it will turn blue and if you dip blue in a acid substances it will turn red. I had lots of fun learning about acids and bases and thanks to Mrs Sharma for teaching us about acids and bases.

  

 

Science Topic 7 Osmosis and Transpiration

Today for science we learnt about osmosis and transpiration. At first we started with Mrs Sharma was teaching us about what was osmosis and transpiration, then we were watching a video about what happens if you put a celery inside salt water and the outcome is the celery starts to die. Then we watched another video about what happens if we put celery in food colouring and that the experiment are class was about to do. 

The supplies we needed was: 

-Celery

- Water

- Food Colouring

- Cups

- Scissors

When we got are supplies we needed to do theses steps:

- 200 mls of water in a conical flask - Add 10 drops of red food coloring into water - Cut the bottom of the celery - Put celery into water - Stir the water

- Put bag over the celery and tie it so no oxygen can get into the celery - Wait at least 30 minutes before moving the celery

When we did all of that we needed to wait so we learnt more about osmosis and transpiration. After that we untied the bag and took the celery out, it wasn't red that much but we cutted it open then we saw the xylem but I didn't have that much red in mine but it was ok because some of the students had food colouring inside of the xylem and that was really cool. I had lots of fun doing this and thank you to Mrs Sharma for teaching us about osmosis and transpiration.