Chemistry Questions and Answers

  • When doing a titration why do you wiegh by difference?
  • When doing reactions when do you know to use Girgnard Reagent (MgBr) or Lithium, dont they do the same thing?
  • when formaldehyde and potassium hydroxide are heated we get____?
  • When grossly contaminated water evaporates, is the condensation contaminated as well?
  • when heated in CRYSTAL glass this chemical turns blue? how do you get the blue out?and what is it?
  • when helium gas is filled in a balloon,it does not rise after a certain height.Why?
  • When I place a container (glass or metal) of water on my heater, the water develpoes a metalic film. Why?
  • when i warm a mixture of amonium nitrate crystals with aqueos sodium hydroxide continue below...?
  • When iron combines with rock materials such as those containing oxygen in a process called_______.?
  • when iron reacts with vinegar what bubbles of gas are formed?
  • When iron rusts in air, iron?(III) oxide is produced. How many moles of oxygen react with 2.4 mol of iron in..
  • When is carbon a double or single bond?
  • when is the nucleus stable?
  • when is the waec nov/dec 2006 result be released?
  • When KCl dissolves in water?
  • when might you need to know whether a solution is acidic or basic.?
  • when naming carboxylic acids, when do i use the ending enoic acid?
  • when nitrobenzene undergoes chlorination??
  • When plotting density vs %NaCl mass, which is dependent variable?
  • When reacting with an atom of fluorine, an atom of sodium will lose an electron and become a sodium________?
  • when referring to chemistry for a&p1 what is the difference between organic and inorganic compounds?
  • when scuba diving, why do the bubbles released when exhaled increase in volume?
  • When small chunks of solid sodium are added to water, the result is a solution of sodium hydroxide and hydrog?
  • when sodium is put in water it sparks sometimes it burns.why it happens so?
  • When something dissolves, do ions of the compounf that dissolved always dissociate?
  • When steam condenses to liquid, H of the water_ and S_?
  • When the number of protons equals the number of electrons, is the atom's charge positive/negative/neutral?
  • When the pressure of a gas increases, what happens to the volume of the gas?
  • when the surface area of particles increases, they dissolve faster -- t/f?
  • When the temperature of a gas increases, what happens to the volume of the gas?
  • when u put Zn granules in FeSO4?
  • when was a neutron bomb tested ?
  • when was gunpowder discovered?
  • when was the periodic table made?
  • when water and bromoform are mixes, two layers forms. Is the bottom layer water or bromoform?
  • when water is passed throug red hot iron hydrogen is produced ? is this statement correct !?
  • when water is passed throug red hot iron hydrogen is produced ? is this statement correct !?
  • when water is passed throug red hot iron hydrogen is produced ? is this statement correct !?
  • When we add Nacl to a solution of HCL in water does the PHof the solution Increase becauseof increased Cl ions
  • When we buy Magnesium....?
  • when will carbon dioxide be insoluble in water??
  • when would you need to use pipettes instead of graduated cylinders or volumetric flasks?
  • when yeast ferments the sugar in a bread mixture, what is produced that causes the bread dough to rise?
  • When you blow bubbles into a glass of water, the following reaction takes place:?
  • When you combine CaCO3 and KCl, can you generate CO2? And is this reaction pH dependent?
  • when you empty a milk carton after being in the fridge.?
  • When you have water and vegetable oil shaken up, how can it be seperated into their own containers?
  • When you mix a lot salt and a little water,why does it make an solid?why does it not work with flour?
  • when you mix fire with hydrogen it makes a squeaky pop. what would happen if you put fire in space?
  • When you weigh a hot crucible, would the mass be heavier or lighter than if you had weighed after it cooled?
  • Whenthesalt BHA is dissolved in water it dissociates to give the ions BH+ and A-. At 25.00 degrees Celsius, t?
  • where do u buy glass tubing in tucson az?
  • Where (in India) can I do M.Tech in chemical Analysis/Instrumental techniques of chemical analysis ?
  • where are sodium and potassium ions found and the roles they play in the body?
  • where are the chemistry experts?!?
  • Where are the natural form of chlorine found?
  • Where can a PhD in Organic Chemistry look for jobs in United States?
  • Where can I bu magnesium ribbon in the U.K?
  • where can i buy the "real feel superskin" (used in the "fleshlight" sex toy) in pre casted or liquid form
  • Where can i buy Agar the algea gelatain thing?need to know for science experiment?
  • where can i buy alkaline metals (lithium, sodium, potassium, rubidium, and casesium) online?
  • Where can i buy different sugars (.e maltose, fructose, lactose) online?
  • Where can I buy methylene chloride and where can i buy ether?
  • Where can I buy powdered Tripoli (brown buffing compound)?
  • where can i buy salt peter?
  • where can i buy science supplys onlne in the uk?
  • Where can i buy sulfur hexaflouride?
  • Where can I buy Sulphur Hexafluoride?
  • Where can I buy these items in powder-form? (energy drink ingredients)?
  • where can i find a list of elements or compounds and look for a name using a know density of 3.4 g/ml?
  • where can I find a manufacturer of a chemical compound that kills mosquito's, flies etc but is safe for humans
  • Where can i find a periodic table of elements with the ammount of electrons per shell?????????
  • Where can i find a step by step experiment for 7th graders.?
  • Where can I find an Electronic Balance?
  • where can i find free articles about thermodynamics online?
  • Where can i find free online help/material/tests for chemistry ?
  • where can i find good simple science projects for 1st & 2nd graders?
  • where can i find information on the chemistry mechanisms of various molecular biology reagents?
  • Where can i find phase diagram for defferent iron ores?
  • where can I find Phenolphthalein?
  • Where can I find pictures of effects of crystal methamphetamine?
  • where can i find science experiment supplies?
  • where can i find single bonds and doubles bond and triple bonds and ionic bonds?
  • where can i find steps on solving chemistry questions?
  • Where can I find the answers to the free response part of the 2001 AP Chemistry Exam? (Question 4 - Reactions)
  • where can i find the earth science refrence table online?
  • Where can I find the melting point, boiling point and molar volume of elements 1-56?
  • where can i find the specific heat and the heat of formation values for organic compounds found before 1987?
  • Where can i find the surface tension and viscosity of many materials on web?
  • Where can I get copper for cheap? offcuts and similar?
  • Where can i get some pure Francium?
  • where can i learn all i need to learn about science and chemistry?
  • Where can I work with a degree in pharmacology and toxicology?
  • Where can my 16 year old son find help with his chemistry class on line?
  • Where can Polonium be found in Earth's atmosphere or crust?
  • Where can polyisobutylene (PiB) be found for purchase?
  • where can you buy potassium nitrate at?
  • Where Can you Find a Magic Sugar? Where Can We Mix IT?
  • where can you find the smallest bones in the human body--the hammer, the anvil, and the stirrup?
  • where can you get Potassium Nitrate?
  • Where can you purchase pur water filtration drinking packets, to provide clean water to people in Africa?
  • Where could I get the balenced equation for aluminuim salts as an antacid?
  • Where did my chemistry professor get these numbers?
  • where did the color of the plasticwares/plastic materials come from?
  • Where do electons come from that flow in a circuit of magnesium+copper strip,dialysis tube,sulfate solution?
  • Where do free electrons originate?
  • where do i buy iodine crystals at?
  • where do plastic come from?
  • where does neon (the element) come from?
  • Where does one buy a chemistry set for a kid?
  • Where does the iodine in salt come from?
  • where i can get online help about chemistry?helpppppppp?
  • Where in the boday are calcium ans phosphorus stored before being released into the bloodstream?
  • Where is a Chem. Geek when you need one... :D?
  • Where is a good website for naming chemical substances practice problems?
  • where is iron sulphate found?
  • where is nitrogen puchased? how much does nitrogen cost?
  • Where is the best place to get dry ice?
  • Where is the potential energy in a chemical compound?
  • where the carbon tetrachloride came from and how it can be detected and what is the physiological action??
  • Where was mercury (the element) discovered?
  • Where was Polonium discovered?
  • which 1 of these two statements are true??
  • Which acid and which alcohol is this ester made from?
  • Which acid and which alcohol is this ester made of?
  • Which acid dissociation constant would I use?
  • Which acid have hugher activation energy?
  • Which acid is a stronger electrolyte, HCL or Boric Acid? And why?
  • Which alcohol would initially produce the most stable carbocation when treated with concentrated sulfuric acid
  • which alkali metal is most reactive with water?why?
  • Which atom acquires the most negative charge in a covalent bond with hydrogen?
  • Which atom bears the negative end of the bond dipole in each of the following bonds?
  • Which atomic spectroscopic method would be most appropriate for each of the following problems. Explain reason
  • which boils faster? warm water or cool water?
  • Which cabonate of the second-column metals has the greatest solubility?
  • Which change occurs when a barium atom loses two electrons?
  • Which chemical element make people laugh?
  • Which chemical is used for making artificial smoke in stageshows?
  • which chemical or element will have the largest number of molecules in oxygen equation?
  • which chemicals convert carbon monoxise to oxygen by sfe experimental techniques?
  • which class of electromagnetic radiation has the lowest energy?
  • Which class should I take next year AP Chemistry or Chemistry Honors?
  • Which compound has a covalent bond between between atoms?
  • which compound will have cis-trans isomers?
  • Which compound would you smell first?
  • Which contains the most molecules: 0.5 mole of water, 0.05 mole of glucose, or 0.005 mole sodium chloride?
  • Which countries have fractional distillation of liquid air.?
  • which do you think freezes first?
  • Which do you think will be used up first?
  • Which electron transitions will produce a photon of shortest wavelength in the Bohr Hydrogen atom?
  • Which element can achieve the same electron configuration as a noble gas when the atom forms an ion?
  • Which element can be made into fake gold by alchemy?
  • Which element in Group 1 easily loses electrons?
  • Which element, when combined, with fluorine, would produce the most nonpolar covalent bond?
  • Which Elements Are Named for People?
  • Which Elements Are Named for Places?
  • Which elements can form diatomic molecules joined by a single covalent bond?
  • Which elements form a neutral oxide?
  • which elements involves rusting of iron!?
  • Which form of electromagnetic radiation has the highest energy?
  • Which form of electromagnetic radiation has the shortest wavelength?
  • which formula can be used to find density?
  • Which gas will undergo effusion at the faster rate? SO2, CH4, O2, CL2, XE?
  • Which gas would you use to support combustion and why?
  • which gas would you used to put out a fire, and why?
  • which group of elements gain 2 electrons when their atoms form ionic bonds?
  • which group of elements loses 1 electron when their atoms form ionic bonds?
  • Which Group of the Periodic Table consists solely of gasses at room temp?
  • which has lowest pH?
  • Which has the highest boiling point? H2 O2 N2 Cl2?
  • Which hydroxides are weak electrolytes?
  • Which Hydroxides are weak electrolytes?
  • Which indicator wont produce a red color when place in conecntrated litmus solution?
  • Which ion has the larger radius, Cl- or K+? Why?
  • which is a flammable oil distilled from coal, shale or petroleum?
  • Which is a true statement regarding cis & trans 2-butene?
  • which is better to use, styrofor or styrofoam?
  • Which is bigger in terms of size as crystals, sugar or salt?
  • which is covalent or ionic?
  • which is likely to be more soluble in water and WHY?
  • Which is more accurate-formula,empirical or molecular formula?Explain your answer.?
  • which is more dense? plywood or plastic?
  • which is more precise a 125 ml erlenmeyer flask or a 50 ml graduated cylinder?
  • Which is more soluble in water, citric acid,salt, or sugar? How do you know?
  • Which is more soluble, salt, sugar or citric acid? How do you know?
  • which is more soluble?
  • Which is more volatile? Benzene or Acetic Acid?
  • Which is not a mixture? a colloid, a compound, a suspension, or a solution.?
  • Which is not an acceptable value of the principle quantum number l if n = 5.0?
  • Which is not in dynamic equilibrium?
  • which is strongest acid ?
  • Which is the best calculator for a chemistry major?
  • Which is the best method to recover a precipitated protein back into its normally folded state?
  • which is the better place to do research in organic chemistry?
  • Which is the easiest class to take between Chemistry and Physics?
  • Which is the limiting reactant?
  • Which is the strongest electrolyte between this 2?
  • Which is the unit number of mg? miligram?
  • Which kind of liquids clean pennies the best?
  • which law am i following by balancing equations?


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