what components of chemistry are used in solving a crime?
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Scientists in labs test blood samples (with chemistry) and other specimen from the crime scene to help find suspects. For example, they might test a paint chip from the crime scene with chemicals to see if it reacts, then test a car with what looks like matching paint to see if the two samples of paint match, therefore finding a huge lead!\n\nAnd testing DNA, of course.
66062
in giving appropriate amount of drugs you have to know a little about concentration of solution or colloid (syrup) molality, molarity, normality, percentage by mass, by volume, by mass-volume,etc; thermochemistry as well. in physics, knowledge in heat and thermodynamics, properties of matter, hydrodynamics (flow of blood), gas laws, etc are some of the basics that you are going to use.
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Police  Departments usually have an Internal Affairs Office.  They investigate allegations of miscounduct by officers and department employees.  That would be a first place to start.
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What three pure elements become deadly when placed one way but meaningless when mixed together?
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Maybe this is of any help?\n\nhttp://www.chemistry.nmsu.edu/studntres/chem435/Lab7/intro.html
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mostly acids. do your own homework
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Just remember glucose (C6H12O6). Then using the basics of balancing any chemical equation you can figure out the rest of it.
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a) +1\nb) 0   (in molecule state)\nc) 0\nd) -3\ne) 0\nf) +4 of Carbon\ng) +2 of Mg\nh) +1 of Chlorine (interesting!)\ni) +6 of Sulphur
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hi pinku. its the science which deals with guns and bullets. when ever a bullet is fired, it gets scratched by the barrel of the gun in a particular way. it is totaly unique. no other gun can creat the same type of scratches on the bullet. its like the finger print of humans. when ever a crime takes place, it can be found out from a group of guns that from which gun was the bullet fired. and from that gun's licence number, person can be identified. thus, forensic experts use this technique to catch the culprit. \nto do this, a bullet is fired from the gun in the laboratory. it is fired at a certain angle in water tank that prevents it from getting scratched from any other outer obstacle. then the bullet is put under microscope and its photograph is taken. same is done with the bullet which is found on the crime scene. then both the photographs are matched.\nalso, it can tell the distance from which the bullet was fired. when ever a bullet is fired, it gets heated up due to gunpowder burning. this results in burning of human skin when it enters it. so, the greater the distance, less is the burn.\nit can also tell that which gun was used.\n\nhope that i was able to answer your question.\nNOTE:- bhai, kisi ko thok mat dena! hahaha......\n\ngood luck!
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Tehe answer is:\nAg + HNO3 -> AgNO3 + H\nAgNO3 + KBr -> AgBr + KNO3
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There are literally TONS of apparatuses used in chemistry, it really depends on the type of chemistry you are doing.  It can start, as stated before, with simple glassware for repeating simple chemical reactions.  This simplicity can be brought to the complexity of machinery used in biochemical labs, such as a mass spectrometry machine, which might cost upwards of half a million dollars compared to a couple of bucks for a beaker.
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Luminol.\n\nLuminol is a chemical that glows greenish-blue when it comes into contact with blood — even traces that are years old. To be exact, it reacts to hemoglobin, an oxygen-carrying protein in red-blood cells. Luminol is so sensitive, it can detect blood at 1 part per million. In other words, if there is one drop of blood within a container of 999,999 drops of water, luminol will glow.\n\n\nInvestigators typically use luminol at crime scenes where no blood is visible. They spray the chemical over a wide area in near-total darkness, so any reaction is obvious. Officers then photograph or videotape the result, using a flash technique that picks up the glow while making the area around it visible and identifiable on film, so the context of the crime scene isn't lost.\n\n\nBut does a glow mean there's blood present? Not necessarily. Luminol reacts to some metals, paints, cleaning products and plant matter. However, the chemical's reaction to each differs in intensity; metals, for example, cause an immediate glow that quickly fades, while blood glows longer. A specialist can tell the difference, and then perform more conclusive tests to determine whether the blood is human.\n\n\nLuminol also can point the way to further evidence or even to how events might have unfolded. For example, if luminol sprayed on a carpet produces a glow, officers might peel back the rug to reveal a floorboard soaked with blood. Or perhaps the glow discloses the direction in which a criminal walked or dragged a body, or whether the victim was shot from behind or above.\n\n\nSo, to anyone thinking that a carpet cleaner or a sponge and soap will erase evidence of their crime, take note. This is one stain that cannot be "shouted out."
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Need more info in order to help you...what class level?...what field of chem?...writing project or lab demo?...what is an 'investigatory project'?\nPlease resubmit your question anew with as much info as possible so that we can offer reasonable suggestions...if you simply edit this one we cannot reply twice to same question.
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Lets start with the pure substance.  It is all the same element or compound.  Solid, liquid or gas, the entire sample is exactly the same no matter where we look at it.  It is considered homogeneous.\n\nTwo or more pure substances when mixed to become homogeneous are called a solution.  Solutions can contain solids, liquids or gases but must be homogeneous (the same in all areas).  Most important solutions contain one or more solids dissolved in a liquid.  The solids are called solutes and the liquid is called the solvent.  When the solutes are mixed with the solvent, the homogeneous solution is formed.\n\nA mechanical mixture is a mix of substances where the final sample is not homogeneous.  Sand is a good example.  Even if fused into sandstone, some areas are different than other areas.  These are called heterogeneous.  Smoke floating in air is heterogeneous.  It is also a mixture.\n\nImpress your teacher with this example of a sample which contains only one element, but is still a mixture.  Diamond dust mixed with graphite dust.  Both diamond and graphite are made of pure carbon, yet the mixture is heterogeneous so it is a mechanical mixture.
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Why would you be looking for the exact chemical combination used to create hydrogen cyanide to kill people in the gas chamber?\n\n15g is more than enough to kill you dead.\n\nThe only industrial use for potassium cyanide that I can think of is for hardening metals. You could try a metalworking shop.\n\nDepending on how strong of HCl you need, you can use muratic acid which is nothing more than weak HCl. Sales of strong HCl solutions are restricted and you would have to obtain from a lab.\n\nA little word of warning, do not expose the potassium cyanide to:\nacids\nheat\nsunlight\nUV light\nIR light\n\nIt is some seriously nasty stuff.
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Forensic science is analyzing the physical evidence to link a suspect to a crime. Criminology is studying why a person, the motives involved, would commit a crime.
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mixture is combining substances, solution is dissolving a substance in another