Chemistry
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Aluminium reacts violently with oxygen (any aluminum surface will very rapidly be covered with AlO2 [aluminum oxide]. If you...
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Two more neutrons
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Gold occurs as the element in nature and so was discovered in prehistoric times. The symbol Au comes from the latin word for gold...
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Saltwater evaporates slower because the sodium and chloride ions of the salt block some of the more energized water molecules...
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lemoncitric acid is found in acidic fruits like oranges, lemons, limes, grapefruit, pineapple, tomatoes and berries. It is used...
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A combination of nickel (80%) and chromium (20%) is used. This metal is referred to as Nichrome.
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Elements were originally placed in order of atomic mass now they are placed in order of atomic number
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Water would be the best solvent compared to other liquids in normal household/laboratory conditions.
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They are quite different terms, penetration means the entrance of rays or any material into another material, shielding effect is...
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To reshape it and/or turn it into an alloy for further processing.
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Fire requires three things: heat, fuel, and oxygen. Taking away any one of the three results in extinguishing the fire. Probably...
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Two positive charges.
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If you're talking about the graphite part of the pencil, graphite melts at 3550 degrees Celsius.
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A potatoe has more water because its a vegitable and vegitables are made up of a lot of water.
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2H+(aq) + 2NO3-(aq) + Sr(OH)2(s) ---> Sr2+(aq) + 2NO3- (aq) + 2H2O(l)
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Only if you slice it open.
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im not joule! OK! i have my own name..
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Whether or not a magnet can conduct electricity depends entirley on the material of which they are composed. If its a metal...
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In food or cooking and as deicer on traffic roads and airport runways
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Sponge can hold more water therefore absorbs more
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phosphorus and nitrogen
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A mixture of another alloy and an alloy would simply result in the obvious.....can you guess? It's an alloy! Surprise!
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Heat Applying heat to ice will melt ice quickly if the ice is in small amounts or in an indoor location. In extreme winter...
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Because "thermal" means heat, and heat is used in thermal energy.
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The chemical formula of magnesium oxide is MgO.
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Depends on the nucleus - Hydrogen has 1. helium 2, lithium 3 etc - that is where the periodic table comes in
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The reason it can be placed in group II is because it has 2 electrons in its outside shell (also its only shell) and the groups...
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copper, metals...
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carbohydrates, lipids, nucleic acids, and proteins
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What do you get when you mix Carbon and Hydrogen together (C + H)?Is it CH 2?
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2C5H6O+ 13O2 >> 10CO2 + 6H2O ( these people have been ' correcting ' capitalization again, so I do not know if the proper...
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Warm water has more energy and can transfer the smell faster because of this increased movment.
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a biochemist studys chemicals and hormones and other things like that.
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Adding more solvent will cause any solute to become diluted and less concentrated.
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They sustain life by trapping heat. Water Vapor supplies 80% of all green house gas forcing. CO2 makes up the difference by...
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Na2SO3, Sodium Sulfite.
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The Nobel Prize in Chemistry 2009 was awarded jointly to Venkatraman Ramakrishnan, Thomas A. Steitz and Ada E. Yonath "for...
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Protons , neutrons are nothing they are combination of further smaller particles Quarks and quarks may also the combination of...
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Changing state is a physical change. The chemical composition of the substance doesn't change, only the form the substance takes....
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When a snail bleeds, the copper protein (hemocyanin) absorbs oxygen from the air, turning the circulatory fluid in the horse crab...
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Yes, the water and sodium produce sodium hydroxide and hydrogen!
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The solute is alka seltzer and the solvent is water.
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Ozone has three oxygen atoms per molecule.
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yes. borax crystal ia ionic compound.
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To desiccate means to dry out. A desiccant absorbs water.
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Yes, but only at absolute zero, which has not been reached yet. For all intents and purposes it will never happen, as absolute...
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There is a wide variety of plastic, and some of it is less dense than water, and some is more dense. There is also a lot that can...
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Parts per million, equivalent to milligrams per Liter.
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This is not the answer..it is just more information on the problem. Please help me, it is crucial! Lead(II) oxide from an ore can...
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Saturated fats are solid at room temperature. Examples--bacon grease, coconut oil.
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There are a variety, depending on the type of imaging being performed. The most common by far is Tc-99m.
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it has four covalent bonds and four hydrogen atoms in it you dumbo
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uncharged K would be diamagnetic
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Yes. It's the same substance, just in smaller pieces.
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A polar covalent bond. Carbon and oxygen are both nonmetals. Nonmetals bond together with covalent bonds.
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Uranium is an element and therefore by definition contains no chemical other than itself.
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An ionic bond. The larger the difference in the electronegativities of the atoms, the larger/stronger the dipole moment.
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we breathe in air as a whole which contains both carbon Di-oxide and oxygen but we exhale out carbon Di-oxide and other...
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the answer is warm soda.
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What do you mean by "basic substances". Ignoring that, Iron & steel will generally only rust when they are in contact with...
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No nothing happens to u.u can see a reaction by poping one in a bottle of coke!!!
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A fire needs heat, fuel and oxygen to burn, remove one of the three and the fire goes out, carbon dioxide (Co2) smothers the fire...
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some chemical reactions giveout energy (they are hot).others take in energy (they are cold)
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Homogeneous.
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Electro-negativity increase up and across (to the right) of the periodic table. Therefore F is the most electronegative and will...
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2 H3PO4 + 6 CaOH --> 6 H2O + 2 Ca3PO4 CaOH not Ca(OH)2 and you need 6, not 3...
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To determine if something is more dense than water: If it floats it's as dense, or less dense than water. If it sinks it's more...
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Weight does not affect melting point.
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Alpha decay is the loss of two protons and two neutrons. Losing two protons causes an atom to become a different element,...
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it is polar because the geometry is asymmetrical.
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The reason why a gas does not have a definite volume and a definite shape is because the atoms and molecules spread out when the...
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The temperature that water boils at depends on the surrounding air pressure. In order for water to boil it must overcome this...
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Because it is really important to remember smart things however i don't know what this means =[
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because when the water is poured or is running it is constantly moving and collects air which then basically gets pushed into the...
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AgNO3 + KBr = AgBr + KNO3
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The element chlorine at standard temperature and pressure is molecular and has the formula Cl2.
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because according to energy profile,metastable state is lying lower than excited state.as we know that states of lower energies...
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Analytical chemistry, gamma spectrometry, alpha spectrometry
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Generally any material in our environment can be classified as elements,compound, or mixtures Elements include: metals like...
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As the depth of water increases the temperature drops... So if ii go deeper and deeper into the ocean it would get colder &...
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Charcoal starts as wood- or in the case of bone charcoal, animal bones. Since both wood and bone are organic, and they are heated...
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Yes, if they are both ions
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A bit different than you might think. Our Earth consists of abnormal matter, as do the other planets. If normal is the common...
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AgCl + NaNO3 --> AgNO3 + NaCl
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