Frosty was a snowman, who died in miss gardner’s lab at 9:31, i reached the scene at 10:18. measuring the rate of melting, and amount when i began to observe, i was able to determine that frosty was melting at at rate of roughly 2 ml per 5 minutes, using this data, i was able to determine the time of death. *sob*.
There was also a new radioactive element discovered, skittles. this element has a half life of roughly a minute, producing a negatively exponential graph, much the opposite of the frosty graph, it was curved with a negative linear relationship.
Curious about these findings, i used an online simulator of atoms to determine why the skittles were so unstable. i found that perhaps there were too few or too many neutrons…. perhaps i will never comprehend this mystery, or what the snowman has to do with anything… hmmm…
Recently in chemistry, we have completed several exploratory labs, computer activities and a test. i learned recently of the stability of elements with different isotopes and ions using a computer simulation. next, i’m planning on learning more about atoms and their stability with different factors
the ted talk and the documentary of the swords have a deep connection to our current studies on classification of matter. as these craftsmen and scientists create these remarkable things with ancient materials, it is applicable to the fact that matter can be changed. whether that means as a different state, changing from liquid to gas, or changing the entire perception of an object. the silk workers physically changed their material to create a great variety of items. and the sword craftsmen used their basic knowledge of the elements to chemically create the most amazing swords known to man. Matter and it’s changes can constantly develop the future.
In chemistry we used different chemicals to determine the properties of several substances. We could not tell the difference with any great accuracy between the powders in the lab on sight alone, so we had to resort to using the reactions of the chemicals to the powders, the iodine changed color with the cornstarch and baking powder, not quite mixing with the cornstarch, while it simply absorbed the baking soda. The water fizzed slightly with the baking power, absorbed the baking soda and did’t mix with the cornstarch. The vinegar fizzed dramatically with baking soda, fizzed slightly with baking powder and didn’t mix with the cornstarch. Given an unknown white powder, based on the reactions observed in the lab, it would be possible to identify the substance by comparing it’s reactions to chemicals with reactions of known chemicals. This could be used to identify substances to solve crimes, or ID parts of a substance.
i have never been what i would call a digital native. though i understand technology, and enjoy it, i have never felt quite familiar with it. i consider myself a native of the world, a native of the planet itself. i never feel quite as at home as i do when i’m out in the world interacting with people or exploring nature. and though i enjoy technology, i dislike the effect it has on our current state of human interaction. So i’d say that i’m not a digital native, i choose not to be.
In the bouncy ball lab we were attempting to create a ball with optimum bounce and a smooth, slick texture. we used a system of changing one variable at a time, finding the optimum amount of one concentration of solution until the best was found, then using that amount of solution in different concentrations while the other two variables were again controlled. this matters because in changing only one variable at a time, we can determine what proportions actually change the outcome of the bouncy ball eventually we found that the best proportion was 15 grams of borax to 100 ml. and solution to glue was 1 ml to 10 grams. The proportion to borax to glue changes the intensity of the polymerization.