Chemistry
This category encompasses all questions about the composition, structure, properties, and reactions of matter.
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3!Electron number always equals the Proton number!
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Neither. Magnesium is an element.
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First LawThe quantity of a substance produced by electrolysis is proprotional to the quantity of electricity used.
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It isn't. Unless you mean why is matter considered mostly empty space, in which case the answer is: because it is. The space...
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what is time table of ba part 3rd exam in magadh university bodhgaya
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Lugol's iodine
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Electrical conduction system of the heart is the class, a subclass of body part
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Valence electrons are electrons that are on the outside "shell." In Group (column) 1, there is only one valence electrons for...
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To keep things in flasks. Glass is less reactive than rubber, and some corrosive chemicals will eat right through the rubber!
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Elemental mixtures of (mainly) two ore more metals, they are not compounds.
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heat is just the transfer of energy from a point of high temperature to a point of lower temperature ex. if a sidewalk is hotter...
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The charges in India are "positive" and "negative", similar to those throughout the rest of the civilized world.
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Crystalline structures (Quarts for instance) have their particles arranged in special way. Noncrystalline structures are not...
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No, monoxide means that there is one oxygen atom in a molecule such as in carbon monoxide or nitrogen monoxide. Oxygen is a...
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The electron configuration determines the properties
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Sulfur is an element, and sulfur dioxide (SO2) is a compound containing sulfur and oxygen.
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discovery of the atom's structure
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The hotter the flame, the less color (and light) given off. Bright, yellow flames are the result of carbon that has not been...
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Firstly, if you asking wanting a Fahrenheit or Celsius type answer, you have to be aware that science has yet to confirm that...
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nickel, cobalt, iron
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1. It could not explain the atomic spectram energy of the elements other than 'HYDROGEN'.2. It could not explain the brightness...
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Cyanide refers to the CN- ion; a nitrogen triply bonded to a carbon atom, with the majority of the negative charge density on the...
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Basic because when sodium borohydride is placed in water, the sodium ion and the borohydride ion split, borohydride abstracts a...
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Gold, copper, silver, or tin
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Gold's symbol us Au, from the latin aurum, meaning gold.
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The list of gasses on air would be very long as pretty much any compound that evaporates could be a minor part of air. Here is a...
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There are many kinds of energy: chemical energy from fossil fuels, electrical energy distributed by a utility company, radiant...
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Can be observed without altering the identity. Ex) color and shape.
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corrosion is nothing but damage, so it even costs the country a fortune when bridges get corroded
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[He]2s22p2
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If two atoms have equal electronegativities, they tend to share electrons equally in non-polar covalent bonds. However, if...
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No, they do not and moth balls are not good for you or the environment either. If the skunk is under a porch, deck, garage, get...
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If stored properly it can hold its pH for several days, but as soon as the water leaves the ionizer it will begin to lose its...
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no, according to periodic trends atomic radius decreases from left to right and increases from top to bottom
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By the reduction of calcium oxide you can prepare calcium: CaO + Mg = Ca + MgO
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Hydrogen sulphate don't exist. Possible: - sulphuric acid (dihydrogen sulphate): H2SO4 - hydrogen sulphide: H2S - ion...
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If this is the configuration of a NEUTRAL atom (not a molecule that is) then it is atom number 24 Chromium (transition metal:...
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Two Hydrogen Atoms and One Oxygen Atom.
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The short answer is : Yes. If you are trying the volcano experiment at home, make sure to wear protective clothing so you don't...
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The number of the elementary particles, protons, determines the chemical element.
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Today are known the phosphorus molecules P2 and P4.
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Divide the weight by the volume.
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it glows orange red when heated and its boiling point is -246.08 °C
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acids
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Sulfur is found in hundreds of compounds including protein. H2S is rotten egg gas, hydrogen sulfide; sulfuric acid, H2SO4Sulfur...
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because heluim a gassic liquid that comprees therefore you can fill many baloons with heluim
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nothing happens
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It is possible to keep water as liquid below its freezing point - see related link.
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Nitric acid, HNO3 has covalent bonds. Two nitrogen-oxygen single bonds, one nitrogen-oxygen double bond and an oxygen-hydrogen...
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Copper metal does not have enough reactivity to react with sulfuric acid.
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bp-4,lp-1
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Yes, because it has been cooked and cannot return to it's raw state.
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Because the pigments found in the marker are sperated by capillary action. So basically all the different pigments found in that...
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9.012 grams, if the formula weight of the element is a single atom. This number would be multiplied by the subscript in the...
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(1.2 x 1048)/Avogadro's number = 2.0 X 1024 moles. (I hope the questioner has a large storehouse!)
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Steel may have molecules of impurities but steel is not molecular. The atoms of metals, such as steel, form a special type of...
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Sodium reacts violently with water, while sodium chloride (or table salt) dissolves in water.
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It is a chemical change
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wll that's a very hard thing to do because you cant just mix the mixture with water and boil it off because for that to happen...
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For example for thermal power units using fossil fuels, from heating installations with fossil fuels, from vehicles including...
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Green plants contain a green plastid called cholorophyll that help in the production of starch by process of photosynthesis. 1. A...
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Sodium Chlorate
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Bluish, something like its Sulfate
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Metals do not exist in crystals. Metals generally are found as compounds, and not as elements themselves. They are found as...
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Rf is nothing but retardation factor in paper chromatography.Rf= distance spot traveled/distance solvent traveled
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sublimation (sublimation is the process of a solid turning into a gas)
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Formula: PH3 Because any compound name with -ine or -ane ending usually refers to that compound of element which contains only...
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Arnica grows from a cylindrical, hairy rhizome. Central stem may branch into three or more stems each with a flower, aromatic,...
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Atomic mass is the weight of a single atom/molecule, while molar mass is the weight of a mole of that particular element/compound.
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Yes: Cu(OH)2(s) + 2H+(aq) + [SO42-(aq)] --> Cu2+(aq) + 2H2O(l) + [SO42-(aq)]
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possibly if it has been contaminated by other substances (as compared to original boiling point - it seems as though it has 2...
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Ordinary soda glass will produce a brilliant orange colour in a flame, and this may well mask the evidence you are seeking....
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Schottky defects tend to lower the density of crystals. Frenkel defects do not.
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A catalyst alters the rate of a chemical reaction.
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Protons and neutrons reside within the nucleus, electrons orbit around the nucleus.
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the precaution to see that air bubbles are not present
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Yes. Actually water is a fairly unique substance as it does not compress at all, and expands when it turns to a solid while all...
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It is the only metal that is liquid at room temperature.
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