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Safety of dishwashing soap

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Safety of dishwashing soap Safety of dishwashing soap I want to compare the safety of normal dishwashing soap to those made of natural ingredients (green alternatives). What would be the best method of testing toxicity/safety? Re: Safety of dishwashing soap Hello! This Science Buddies project might be a good resource for you. It describes how to test the safety of different liquid detergents using worms… Read more

How to measure antioxidants in beverages without laboratory testing?

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

How to measure antioxidants in beverages without laboratory testing? How to measure antioxidants in beverages without laboratory testing? I have to submit research soon and I am making a sports drink for my science fair project I want to measure the amount of antioxidants in the sports drink I created vs Gatorade. We aren't allowed to do laboratory testings so how do I do a homemade antioxidant test? Please respond quickly if thats possible. Thanks!! Moderator note: I've combined your two… Read more

Changing equipment in Exothermic Reaction Rates

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Changing equipment in Exothermic Reaction Rates Changing equipment in Exothermic Reaction Rates Hello, I was wondering how I could change the oxygen tank situation in the Exothermic Reaction Rate science experiment, where I am investigating how different levels of oxygen affect the exothermic oxidation of iron powder. Is there an easier way to not include the oxygen tank in this experiment, or a different way to do it in general. Thank you Re: Changing equipment in Exothermic Reaction… Read more

science fair filtering water w charcoal

Ask an Expert Topic Forum: Grades 6-8: Life, Earth, and Social Sciences

science fair filtering water w charcoal science fair filtering water w charcoal um just wondering like what exact amounts of activated charcoals do i need for this https://www.sciencebuddies.org/science-fair-projects/project-ideas/Chem_p108/chemistry/which-filtration-material-leads-to-the-best-drinking-water Re: science fair filtering water w charcoal There are suggested materials linked in the Materials list for each kind of carbon you'll use. If you carefully read through the… Read more

How Does Color Affect Heating by Absorption of Light? Experiment redo (urgent-ish)

Ask an Expert Topic Forum: Grades 6-8: Physical Science

How Does Color Affect Heating by Absorption of Light? Experiment redo (urgent-ish) How Does Color Affect Heating by Absorption of Light? Experiment redo (urgent-ish) Hello. This will be a very lengthy post, unfortunately. I used this project (https://www.sciencebuddies.org/science-fair-projects/project-ideas/Phys_p030/physics/how-does-color-affect-heating-by-absorption-of-light.), as my science fair project for my local school. I have advanced to the city-wide level, and I am looking to… Read more

Candy erosion

Ask an Expert Topic Forum: Grades K-5: Life, Earth, and Social Sciences

Candy erosion Candy erosion I’m helping my son with a science fair experiment about erosion, adapted from here: https://www.education.com/science-fair/article/erosion/ I’m looking for advice on how to measure/display the results. So far we have tested two types of candy, and both broke down/eroded in moving water vs still water. One was a hard candy (pez) that broke into small pieces, the other an m&m that shrunk in size but was intact. It’s obvious that moving water broke down or… Read more

Urgent help needed in Microbiology project!!

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Urgent help needed in Microbiology project!! Urgent help needed in Microbiology project!! Hello, I'm working on a dye degrader microbe isolation project. So for enrichment I'm using Mineral Salt Medium with anthracene as a sole carbon source. There's no other carbon source added. I was supposed to add 0.01g anthracene in 500ml of the medium(according to references and my guide), but during separate preparation of 250ml+250ml in two flasks I added 0.5g in each 250ml😖which becomes 1g… Read more

Help making Agar Plates

Ask an Expert Topic Forum: Grades 9-12: Life, Earth, and Social Sciences

Help making Agar Plates Help making Agar Plates I have been trying to make Agar plates for the last two weeks, and they do not want to solidify. The first time I tried making them, I left them undisturbed in a room at room temperature. I was told by my teacher to put the lid on, but have it to where it is slanting so the condensation coming from the Agar doesn't disturb it. When I came back to check on, it had a water-jelly like consistency and had form some sort of crystals. I redid the… Read more

Battery Corrosion

Ask an Expert Topic Forum: Grades 9-12: Physical Science

Battery Corrosion Battery Corrosion Corrosion seems to be a continuous problem for alkaline batteries that in my mind then leads to premature failure and disposal of some many batteries (partly because there is recommendations out there to not mix new and old batteries) So if one goes bad it might mean throwing away 4. This got me to this question, Is there a way to prevent or delay this corrosion from happening. For instance, Wondering if the use of a dab of dielectric grease on the end of… Read more

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