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Ask an Expert Topic Forum: Grades 9-12: Physical Science
(HELP) Explore How Chromatography Can Unmix Mixtures (HELP) Explore How Chromatography Can Unmix Mixtures Hello so I am struggling on this specific project (https://www.sciencebuddies.org/Files/13 ... cedure.pdf) and was wondering if anybody could help me or answer some of my questions. 1. In step 3 it states" Pour a small amount of your your first solvent (water) into the 100 mL beaker". I wondering if the amount that I pour for the first solvent should be the same when I pour the… Read more
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Is my hypothesis for my lab report good?? Is my hypothesis for my lab report good?? Is this hypothesis good for my lab report? It is due tomorrow, and this is urgent, so please reply quickly. Thank you! Based on research and gathered information, it is hypothesized that if an egg is soaked in different liquids, then the egg soaked in a liquid will shrink and become wrinkled because of osmosis, and the egg will be in a hypertonic state or the egg placed in a liquid will grow bigger and become… Read more
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DNA extraction from peppers DNA extraction from peppers Recently I've learned how to extract DNA from vegetables. When me and my class were in the lab, we were devided into teams. My team used red sweet pepper/ bell pepper. Every team that used the peppers, got bad results- the DNA came out as red dots instead of white strings. However, the teams that used onions or cucumbers got perfect white strings. I wanted to ask- did it happen for a reason? or was there just a problem with the… Read more
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Ask an Expert Topic Forum: Careers in Science
Käänteisen Puhelinnumero hakupalvelu - Kuinka sitä käytetään huijaavan aviomiehen tutkimiseen Käänteisen Puhelinnumero hakupalvelu - Kuinka sitä käytetään huijaavan aviomiehen tutkimiseen Ennen matkapuhelinten yleistymistä ei ole vaikeaa tunnistaa soittajaa linjan toisessa päässä. Asuntojen Puhelinnumero ja lankapuhelin voidaan sijoittaa onnistuneesti tavalliseen puhelinluetteloon tai puhelinluetteloon. Jos kuitenkin haluat jäljittää matkapuhelimen tai piilotettujen numeroiden omistajan,… Read more
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Educational & eco-friendly toys for boy Educational & eco-friendly toys for boy What do you think about eco-friendly toys for kids? Maybe do you create some of them on your own? May they be attractive for children in our times, when it is important to have the newest smartphone model? Do you know some educational, green and less / zero waste toys which I can buy for a 10-year old boy as a birthday present? I was thinking about some wooden train, board game or old set Lego - I heard… Read more
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Ask an Expert Topic Forum: Grades 6-8: Physical Science
Human powered energy Human powered energy For my science fair project I tried doing a project on Science Buddies called Human Powered Energy. I did everything the instructions told me to but it didn't work and my LED's weren't lighting up at all. I tried looking at their help FAQ's and tried their tips but it still wouldn't light up. Here is a link to the Science Buddies project I used: https://www.sciencebuddies.org/science- ... gy#summary. Do you have any ideas why it might not work? Re:… Read more
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Ask an Expert Topic Forum: Grades 9-12: Physical Science
May I please have help for my SRP? May I please have help for my SRP? I have a school SRP and my question is how the wavelength of light affects the growth (height) of plants. I'm using cellophane as a light filter and watercress as my plant as it will be easier for me to measure height. However, my school wants us to have both our independent and dependant variables be quantitative. However, I'm uncertain whether the wavelength would be considered quantitative as I'm only using 6… Read more
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Biology Labs Biology Labs Hi, I was wondering if someone knew why there were more catalase enzymes in potatoes than in leaves. Or simply why do potatoes have so many catalase enzymes. Thank you! Re: Biology Labs Is this question about a science project? This is a forum for help with projects, which we are happy to do if you give us more information about your idea Read more
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Ozone layer depletion Ozone layer depletion hello! i'm a student of 8th grade, i've chosen Ozone Depletion effects on skin cancer as my science fair project. thing is, i would like to ask help to find information about maps, and any source of information i can carry on a comparison with. it would be much appreciated! i wish to compare skin cancer metrics by zones with Ozone depletion holes. personal info removed by moderator per Science Buddies guidelines. Re: Ozone layer depletion Hi… Read more
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Ask an Expert Topic Forum: STEM Activities
A question A question Type your question below and then press Submit! Why does carbon exist? ------------------------------------- Leave this to help the Experts: The activity can be viewed at: [url=https://www.sciencebuddies.org/stem-activities/make-a-fire-snake:26lk2hcq]Make a Fire Snake Read more
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Free science fair projects.