This category encompasses all questions about the composition, structure, properties, and reactions of matter.
Do mints dissolve faster in water or soda?
What happens to particles in matter when heat is removed?
Then the particles would normally move slower. However, they can also lose energy in other ways; for example, when a liquid turns solid. Then the particles would normally move slower. However, they can also lose energy in other ways; for example, when a liquid turns solid. Then the particles would normally move slower. However, they can also lose energy in other ways; for example, when a liquid turns solid. Then the particles would normally move slower. However, they can also lose energy in other ways; for example, when a liquid turns solid.
What sentence correctly compares the acidity of acid rain to the acidity of natural rainwater?
Acid rain is slightly more acidic (has a lower pH) than normal rain. As an explanation the pHs of common materials (acids and basess) including Acid rain are: Lye 14.0 Ammonia water 11.6 Eggs 8.0 Blood 7.3 Distilled water 7.0 Saliva 6.0 Normal rain 5.7 Acid rain 5.2 Tomato Juice 4.2 Apple Juice 3.0 Coke products 2.5 to 4.2 Vinegar 2.4
What is the symbol of an ion with 22 protons 24 neutrons and 18 electrons?
What is the Lewis dot structure for SBr2O?
S has 6 valence e- Br has 7 valence e- x 2 = 14 valence e- O has 6 valence e- Total valence e- = 26 Lewis dot will be S in the center with single bond to each of 2 Br atoms, and single bond to the 1 O atom. The central S atom will have 1 lone pair, and each of the Br atoms as well as the O atom will have 3 lone pairs. That's it.
What does L6 mean on Kidde Carbon Monoxide Detector?
What would speed up a reaction?
Increasing the heat (temperature) doesn't always increase the rate of reaction. If the reaction is exothermic, it will actually decrease the rate of the forward reaction and increase the rate of the reverse reaction. A catalyst will increase the rate. Using smaller particles (increased surface area) will increase the rate. And increasing concentration of reactants will increase rate, but ONLY if the reaction isn't zero order with respect to those reactants. Otherwise, increasing concentration will have NO effect on the rate.
What temperature is the freezing temperature outside?
Can you use the technique of measuring volume as a means of counting?
It depends on the experiment. In one particular experiment, using the technique of measuring volume as a means of counting will work. Think of measuring volume; a tablespoon of sugar or salt. When measuring the volume of it, we are measuring how much space it takes up. This can also be a means of counting because once the molar mass of each element is accounted for, the number of moles (counting!) can be calculated.
What is the fourth element of the periodic table of elements?
What is the compound formed from Ca2 and NO3 -1?
The compound formed is calcium nitrate, Ca(NO3)2. Calcium forms a +2 ion and the nitrate polyatomic forms a -1 ion. In order to balance out the charges, you need two nitrate ions to bond with one calcium. This ratio is reflected in the formula, which places the nitrate in parentheses with the "2" subscript outside it, which means there are two of them.
What is the value of onyx?
What kind of toxic wastes are produced by nuclear energy?
Nuclear energy produces wastes in the form of spent nuclear fuels, which are a mixture of radioactive isotopes and heavy metals - both of which are toxic - and irradiated materials surrounding the reactor which become radioactive from exposure to the radiation produced by the reactor and which must be disposed of at the end of the life of the reactor. Note that breeder reactors - which are not permitted in the USA - convert some of the otherwise unusable radioactive isotopes into fissionable isotopes, thus allowing more of the fuel to be used and reducing amount of fuel rod waste (with the rods being re-processed to recover more usable fuel rather than just disposed of).
Where is plutonium found?
Plutonium was discovered by Glenn T. Seaborg, Edwin M. McMillan, Joseph W. Kennedy and Arthur C. Wahl at the Berkeley Laboratory of the University of California (United States) after the bombardment of uranium with deuterons. Now plutonium is obtained in nuclear reactors. Uranium minerals are accompanied by plutonium in extremely insignificant traces.
Does hot water freeze faster than cold water?
This is a very vexed question. Repeated studies have failed to show definitively that the statement is true, though it has passed into popular lore. There have been many explanations attempting to account for it, some of which are detailed here:http://math.ucr.edu/home/baez/physics/General/hot_water.html However, careful examination of the accounts of the experiments which purport to show the so-called Mpemba effect have shown there is a lot of inconsistency in what was being measured. A study in 'Nature' failed to find any real evidence for the phenomenon. http://www.nature.com/articles/srep37665 Personally, as a scientist I know that what seems intuitively obvious is not always the truth, but on this one I remain to be convinced.
Will aersol cans explode if they freeze?
Generally, no. The cold may cause the liquid contents to solidify, but they don't take up that much room in the container. That means they won't freeze and expand and break the container by doing so, even if they expand when they freeze. Freezing the propellant doesn't do anything to it except reduce its vapor pressure. Addendum... the first answer is right on. I add only that this myth comes from what happens when you freeze water, where it flashes from a dense liquid to a less dense crystal lattice. That "formalized" shape takes up more room than the liquid form which is why ice cubes float in water. This lattice formation is actually quite rare, and doesn't usually apply to non-water gases or liquids. Actually, both above are generally wrong. It is predicted that no, an aerosol can will not explode. It will IMPLODE. Yes, it does matter how cold it is. If it was -10, then no. But if it is drastic, say -150 degrees or so, it will implode because if the liquid in the can is under pressure already, it would have to be HEATED to explode! Duh! So it is possible that it will implode. Never explode in cold temperature.