Science Experiments

Posts Tagged ‘experiments’

Question: physics vday dorky!?

ok….my bf and i met in physics lab and had physics 1 & 2 together and were lab partners where we developed a great friendship…we’re both science majors and really dorky at heart. anyway, i figured the best gift for valentines day would be one that includes a physics experiement or something (yea, dorky, i know!) i dont even know if this is at all possible! but i figured it would be super cute to incorporate a simple physics experiment for v-day…like, i know how to make slime/gack and stuff like that and i work for the physics dept at school and have access to everything i could ever need. but if theres a way to make a heart or do something physics-y and cool to a picture or make something artistic somehow, please let me know! i dont know how realistic this request is, but if you are dorky enough to have an idea, please share!

Answer: haha – I love it! I’m a huge dork…a bit more in a linguistics/psychology type of way, but I do love physics. What about something with…IDK…ok, yeah I have no idea. The only thing I can think of is building a series of simple machines and moving a ball or something that ends with a message/love note! Ha! That’s the first thing that came to mind.

Lame, I know – but I do wish you the best of luck!

How to Make SLIME!!! (Science Experiment)

Question: Why was there boiled liver in our digestion experiment in science?

In science, we did an experiment on enzymes, we where given 3 boiling tubes with H2O2 in them and a few drops of washing up liquid, we were instructed to put a small piece of raw liver in one boiling tube, one small piece of boiled liver in a boiling tube, and a small piece of carrot into the last, we then had to observe for 5 minutes or so and measure how tall the bubbles were in each tube, the raw liver got the tallest bubbles, But then our teacher asked us all why there was boiled liver in this experiment, and know one could answer.

So i was wondering, why is there boiled liver in our experiment?

Answer: raw liver has catalase ,which degrades H2O2 to form oxygen(the bubbles you see)
the boiled liver serves as a control,the catalase has denatured,so no bubbles.
carrots also have catalase.you would also get the same result with crushed beans.

!!Peristalsis!!

Question: Dangers of nitrogen, carbon dioxide gas?

i was watching Cool Science Experiments that involve liquid nitrogen and solid carbon dioxide.. it makes a cool smokey effect.. however, i was wondering if we play with the carbon dioxide gas (fog from the solid C02), we will breathe in C02 and danger our health..

so.. i was wondering.. does liquid nitrogen gases (the fog) affect in any way?

Answer: The gas part has been covered. How about the Temperature of liquid nitrogen? It is soooo cold you need a special container for it…and gloves. Because if Liquid N2 comes in contact with your skin, it will INSTANTLY freeze it, and this is not your everyday freeze…it will HURT as your tissue & cells freeze beyond the point of repair. Cystalization damage will occur. People who freeze themselves thinking they’ll be able to thaw out in the future are dreaming. We have yet to figure out how to properly thaw an organism frozen to that cold of temperatures without severely damaging body parts. Just be careful of the liquid, probably even more than the gas.

I’ve watched professionals stick their face in N2 gas….its all about the air flow in the room your in…bigger the room and the more turbulent the air flow (windy), the better you’ll be.

Nitrogen is a very heavy gas, more so than CO2…both fall to the floor. It is not a good idea to have small children playing on the ground near the clouds. They are small enough to be enveloped in gas. The motion of the child and air flow will move the gas quick enough not to pose a death threat, but come on, they’re our kids for chrissake!!

Solids Liquids & Gases