Image source: http://ib.bioninja.com.au/standard-level/topic-2-molecular-biology/24-proteins/the-ph-scale.html
Summary: This week I learned about bases, acids, and neutral. Bases are things that feel slippery and most taste salty. Acids however are sour and some can burn your skin if your not careful. Lastly neutrals are things in between acids and bases. I also learned about the Ph scale which is a scale of color and numbers to tell if something is acidic, neutral, or if the element was a base. If something is acidic and you put indicator in it then it would turn pink. On the Ph scale 6 and below is acidic which is the color pink. Then 7 is neutral which is the color green. Lastly 8 and above is bases which is the color purple or blue. One more thing that I learned this week is that some people dilute acids to use it as a cleaning product. Acids can be used as a cleaning product since it can get rid of grime on dirty surfaces. Diluting however is when you mix acids and bases together because they cancel each other out which makes the acid not as effective to burn you.
SP4: Analyzing and interpreting data
Scientific investigations produce data that must be analyzed in order to derive meaning.
Did you create a graph, table, drawing, etc. of the data you obtained in an experiment?
Answer: Yes we did an experiment in class so that we could understand the Ph scale better. The experiment was a baking soda solution with an indicator of cabbage juice. We had to had to mix water with 1 scoop (popsicle stick) of baking soda and put it in the cabbage juice. We did this 6 times and for each of those 6 times we added one more scoop of baking soda to the water. The cabbage juice each time still stayed pink. We did the same thing for sodium chloride and cabbage juice but instead of pink it turned green.
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