Does this project relate to Earth Science?-What concentration of bleach is needed to kill mold?
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i would think yes, if you are in 6th grade earth science... in there they study enviornment, organisms... etc. well, mold is an organism, and it could be tested how much bleach in enviornment would kill it... this relates to polution of enviornment, and effect of factors on organisms
334265
I think the concentrations would be too small to be visible.  you would only be able to react with the available OH-'s, which is 10^-7 mol/L, in theory the maximum quantity of Pb(OH)2 you could make then would be 5x10^-8 mol/L.  If Le Chatelier's principle came into play maybe a little more, but that's assuming everything reacted, which probably wont happen.
333785
it's totally depends on the type of the bacteria!\n1)sterilization:fungi is so sentitive to this condition.but if the bacteria is the kind that produce endospore then this method is not useful\n2)pasteurization:kills all the bacterias except the one couses Query\n3)filterization:useful for bacterias except Mycoplasma\n4)Rays like UV X and Gamma\n5)chemical Gases which are mutagenes like rays\n6)chemical liquids
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http://www.scioly.org/obb/board.php?FID=35\n\nThis is where I get help for such projects.  If you can't find the information, start a new topic and ask your question.  It is a great science project help site!
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Some types of MOLD are extremely toxic like Black Mold. Some persons are allergic to all mold. I am very allergic to mold in large quantities. The larger the amount the more problems I have with it. But any mold give me some discomfort.\nBreathing is mold spores is BAD for anyone and it does not belong in the lungs and blood stream.\nMany people do not know they have mold since there is no signs in there house. It can be inside the walls, behind tile, under floors or carpet and even be outside (seeping into the home). Water damage causes mold, any moist humid areas can casue it. \n\nMold can cause many reactions like: headaches, insomnia, difficulty breathing, hurts when you breathe, swollen glands, trouble with memory, imbalance problems, lethargic, tired, and more.\nYour problem may be swollen glands in your neck area which can make the throat smaller or swollen inside. This would make it harder to swollow. This is just one possible problem.\n\nMy suggestion is to talk to your Herbalist, Health Food Store, Naturalist, or Homepathic persons. Tell them what you are feeling and your problem with mold. It never hurts to ask around. They can refer you to the right person. Not all cures have to be chemicals or pharmacy meds, there are great cures out there in other forms.
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"Earth Science" is a very broad field.  Perhaps you could be a bit more specific.\n\nMold is a decomposer (i.e. it breaks down dead things).  Various species of mold also secrete antibacteria agents (that's where penicillin comes from), which is pretty cool but probably not relevant to your project.
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1. The EPA has set maximum amounts of contaminents for drinking water. here is a table http://www.water-research.net/standards.htm\n\n2. You could use ultra-violet, this works well, also ozination.\n\n3. A gallon jug of household bleach down the well casing usually does the job. After dumping the bleach in, run water at every spigot in the house until you smell bleach. shut water off and let sit for 12 hours, then run water until color is clear and smell has dissipated.\n\n4> ?
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Microbiologists are hunting all over the world for bacteria with amazing abilities.  ( I recently answered a question about the discovery of bacteria that extract gold from seawater).\n\nChances are, your household already contains the products of bacteria.  The enzymes in detergent, yogurt, buttermilk, and vitamin supplements and many products are produced by bacteria or fungi.\n\nBelow are two links to some current uses of microbes.\n\nI have no doubt that scientists could use bacteria to produce energy from waste.  In fact methane (natural gas) is  a fuel that can already be produced by microbial decomposition.
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At this time, there are no national standards by OSHA, EPA or the CDC on what a safe level of mold spores is inside a home. There hasn't been enough research yet for this emerging problem.
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Find a question that relates to the local area you live in, something you may have noticed, or has controversy.  A saying I like is "One measurement is worth a thousand expert opinions", which is the essence of science.  So find something to measure.  When I was in school (a long time ago) people I knew wondered about whether the local creek was clean enough.  Kids played in the creek and some people fished in it, but I thought it shouldn't foam and have a not quite clear look.  So, I got some sterile petri dishes from the biology lab, got some q-tips, and talked the local hospital pathologist into helping me.  If you need help, ask, you might be surprised, it turned out he was curious too.  Anyway, I learned a bit about how to identify bacteria and yes, the creek was polluted-bad!  I made the front page of the local paper.  I'm not saying do this, but think of a local problem and measure it.  Hope this helps.
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I am a meat cutter and we sterilize everything with bleach water ... about 1 capfull of bleach to 1 quart of water
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Bleach is a popular laundry aid and helps detergents remove soils and stains. Through oxidization, laundry bleaches convert soil into more soluble, colorless or dispersible particles that can be removed by detergent and carried away in the wash water.\n\nThe two general oxidizing types are sodium hypochlorite (also called chlorine or liquid household bleach) and oxygen. Sodium hypochlorite and oxygen bleaches should not be used together. The benefits of both are lost when combined.\n\nColor removers, considered reducing bleaches, are also products in the bleach category. \nSodium Hypochlorite Bleach\nLiquid sodium hypochlorite bleach is the most widely used, although a dry form is also available. Liquid sodium hypochlorite bleach is made by combining chlorine with a solution of sodium hydroxide to produce sodium hypochlorite, sodium chloride and water. The sodium chloride is a by-product of the chemical reaction and remains in the solution as an inactive ingredient. When liquid sodium hypochlorite bleach is added to the wash, sodium hypochlorite reacts with the soil and organic matter. As a result, liquid household bleach:\n\n1) Oxidizes soil and aids in its removal\n2) Acts as a disinfectant on both bacteria and viruses likely to be encountered in the home\n3) Generally whitens fabrics\n\nThe bleaching action of sodium hypochlorite is essentially completed in about 5 minutes, even less time in hot water, but slightly longer in cold.\n\nThe dry version performs like liquid sodium hypochlorite bleach when dissolved in water. \nOxygen Bleach (all-fabric bleach)\nOxygen bleaches are available in both a dry and liquid form. All dry oxygen bleaches contain inorganic peroxygen compounds, such as sodium perborate tetrahydrate and sodium percarbonate. When dissolved, the inorganic peroxygen compounds convert to hydrogen peroxide (the oxidizing agent) and the residue of the compound (e.g., sodium borate or carbonate). Liquid oxygen bleaches contain hydrogen peroxide, which supplies the oxidizing agent directly. The hydrogen peroxide reacts with the soil and organic materials in the wash to either decolorize or break them up. Hydrogen peroxide provides a more gentle bleaching action than sodium hypochlorite used in chlorine bleaches.
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You will need to know the size of the mold needed... how large it the finish article... L x W and thickness..
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to kill the mold use bleach mixed with water 1 part bleach 2 about 100 part water  kill it be for removing or you will get a lot more  to remove use green scrubie or wire brush
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My friend Donna has some great science fair links on her page:\n\nhttp://www.lewismiddleschool.com/Earle/earle.htm\n\nAlso - my daughter won her elementary science fair one year with a great project on earthworms.  We got 2 one-gallon glass jars.  We put gravel and dirt in each jar, about half full.  In each jar, we put equal amount of organic garbage - small chicken bone, orange peel, apple core, small piece of newspaper, etc.  In one jar, we put 50 earthworms.  We closed the jars (with airholes) for one week.  Most of the garbage from the worm-jar was gone.  In the other jar, the garbage was still there.  It was a winner!
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Depends on what the source of the mold is.  If it is just common mildew then no.  It is your responsibility to keep your bathroom clean.  If it is a serious mold problem, then alcohol will kill it.  If you just want to get out of your lease, work out a deal with your land lord.  Don't be shady.
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try looking at this website http://www.madehow.com/Volume-2/Bleach.html it gives you the history  and the raw materials that make it, i hope this helps