pH lab

Properties of Water

As we all know there is water all around us. We all use water in many different ways. But here are the properties of the water we may use. In science water is define as H2O. In most organisms there is at least 80% of water. In the lab we did there was polar and non-polar covalent bonds. The polar covalent bonds are not sharing the electrons evenly. Non-polar covalent bonds are sharing electrons evenly. When we drop water on the penny it stick better then when alcohol was drop. As we drop a drop of water on to the wax paper and try to split it, it kept its shape and move at the same time. This made it a non-polar covalent bond.

Experiments.!

In the corn lab we had to test the corn with infestation which is bugs, to see how the corn would grow. The corn that had less bugs grew better then the one that had a high amount of infestations. This experiment was a controlled one. It was use to test the different levels of European Corn Borer(ECB). Like in most controlled experiments there was a independent variable and a dependent variable. The independent variable was the level of infestation. This variable is the only one that affects the outcome of the experiment. The dependent variable is the results of the changes. In the lab the dependent variable was the yield of the corn plants which is the kernel weight per car of the corn.

A Clinical Trial is a place where they experiment on new treatments or diagnostic. The methods they use are tested in people to see if it would be effective and safe. In one trial they gather two groups of people. They give the first group the actual treatment and they give the other group a "mint". The second group thought it was working. So therefore they were testing out to see if it was just a placebo. A placebo is where the mind plays tricks on you. You think its working when in reality its all just in your mind.