Chemistry
This category encompasses all questions about the composition, structure, properties, and reactions of matter.
Total questions 1014200
Follow
Falkirkdouglas [5]
wrote the first answer to Ethanol chemical structure 4 minutes ago
ID3173019859
asked Ethanol chemical structure and said it was different from What is the Lewis structure of ethanol 9 minutes ago
ID3265945554
wrote the first answer to Is SCl a polar molecule 11 minutes ago
Gimmethatcat1234 [0]
wrote the first comment on Discussion: What is the chemical messenger of the nervous system 11 minutes ago
Answers
Vigorouschemist
GRALISTAIR
Meave60
Desdichado
Norvellwisdom
Edits
GRALISTAIR
Mannydlr
Vigorouschemist
Theprismgroup
Desdichado
Organization
HisPowr4U
Desdichado
Dfoofnik
GRALISTAIR
Muhammadafzal
Questions
Vigorouschemist
Gracepiano14
Dawnvicm
Rohanchandra 258
Ilovetacos015
Community
Lazarus
Desdichado
Bringingthewood
Dfoofnik
Norvellwisdom
A mixture, a pure substane is an element(only 1 type of atom)
Popularity: 2 • Tools: Recategorize
Yes it is. there are lone pairs on the oxygen that induce the dipole moment
Popularity: 2 • Tools: Recategorize
Two atoms will react if in so doing both will obtain completely filled outer shells.
Popularity: 2 • Tools: Recategorize
Because pH operates on a logarithmic scale (pH=-log[H+]), a difference of 2 pH units is a difference in 102 (100).
Popularity: 2 • Tools: Recategorize
No; oil and water are immiscible. They can be combined in an emulsion by vigorous shaking, but it separates after standing for a...
Popularity: 2 • Tools: Recategorize
What scientists studied freezing point of depression? I can't find any.
Popularity: 2 • Tools: Recategorize
element
Popularity: 2 • Tools: Recategorize
The solid phase...
Popularity: 2 • Tools: Recategorize
electrons
Popularity: 2 • Tools: Recategorize
No, not in most household preoducts
Popularity: 2 • Tools: Recategorize
well you know its not a chemical change when you see the salt dissolving because if your were to put something else like sugar...
Popularity: 2 • Tools: Recategorize
Yes, all elements have at least one radioactive isotope. Hydrogen has two isotopes, Deuterium and Tritium. H3 has a half life of...
Popularity: 2 • Tools: Recategorize
Only when it's at about 68-77 degrees Fahrenheit
Popularity: 2 • Tools: Recategorize
Mixture. w00ts for self answer
Popularity: 2 • Tools: Recategorize
water is a universal solvent because it can disolve both bases and acids.solvent disolvessolutes are disolved
Popularity: 2 • Tools: Recategorize
The Lanthanide and Actinide series are at the bottom of the periodic table of elements because if they were where they were...
Popularity: 2 • Tools: Recategorize
39/18 Ar --> 35/16 S + 4/2 He All you do for any alpha decay equation is subtract 2 from the bottom fraction and subtract 4...
Popularity: 2 • Tools: Recategorize
energy level
Popularity: 2 • Tools: Recategorize
Making slime is a chemical change because all the ingredients added to make up the solution have changed to form "slime".
Popularity: 2 • Tools: Recategorize
It depends on the units you are using for density. Typically, water is thought to have a density of "1" at 4 degrees Celcius....
Popularity: 2 • Tools: Recategorize
that means the it can not be undone because another substance was introduced
Popularity: 2 • Tools: Recategorize
i am asking the same quesion it is on my chemistry homework and i dont know the answer!!
Popularity: 2 • Tools: Recategorize
Yes. Both are noble gases, and are chemically almost indistinguishable without precise testing.
Popularity: 2 • Tools: Recategorize
what are the similarities of mixtures and compounds?
Popularity: 2 • Tools: Recategorize
One hundred ten degrees below zero. At 109 degrees below, it begins to sublimate ("make fog").
Popularity: 2 • Tools: Recategorize
An electron has a very very small mass, but a high density.
Popularity: 2 • Tools: Recategorize
It is unknown who named it Beryllium Found this in wikipedia: The name beryllium comes (via Latin: Beryllus) from the Greek...
Popularity: 2 • Tools: Recategorize
It is a polar phosphoric acid, it has a polar head (hydrophillic) and non polar tail (hydrophobic). The head loves water, tail...
Popularity: 2 • Tools: Recategorize
no. when u set ur glass cup on the stove it doesn't break it just sits there.
Popularity: 2 • Tools: Recategorize
Uranium minerals as pitchblende, uraninite, carnotite, davidite, etc. or as a secondary product from the mining of gold,...
Popularity: 2 • Tools: Recategorize
argon doesnt effect human health because it is a noble gas which means that it is colourless tasteless odorless AND non-toxic
Popularity: 2 • Tools: Recategorize
no because forces cancel only when the act on the same object. if two players kicked the same thing with opposite and equal...
Popularity: 2 • Tools: Recategorize
Atoms are made from protons, neutrons and electrons. Protons and neutrons in nucleus and electrons in orbits around the nucleus.
Popularity: 2 • Tools: Recategorize
If the object has a regular shape, like a cube or sphere, its volume can be calculated readily from solid geometry. Weight...
Popularity: 2 • Tools: Recategorize
There is no element with that atomic mass, the element that comes the closest is Ununbium with an atomic mass of 277.0.
Popularity: 2 • Tools: Recategorize
2KI + Cl2 = 2KCl + I2
Popularity: 2 • Tools: Recategorize
Liters, Mililiters, Gallons or Pints.
Popularity: 2 • Tools: Recategorize
Water boils at 100 degree C ( 212 degree F ).
Popularity: 2 • Tools: Recategorize
Soot and Carbon Monoxide.
Popularity: 2 • Tools: Recategorize
Yes, the National Fire Prevention Association (NFPA), British Standards Institute (BSI) and European Normal (EN3) have developed...
Popularity: 2 • Tools: Recategorize
they did mudasar iqabal
Popularity: 2 • Tools: Recategorize
Popularity: 2 • Tools: Recategorize • Needs Answer
Assuming you're using Universal Indicator, you'd get a dark red, as it is pH 1. Battery Acid is Strong stuff.
Popularity: 2 • Tools: Recategorize
You can burn it with the torch but that will give it a powdery substance, it wont stay black of you touch it, but put sealer over...
Popularity: 2 • Tools: Recategorize
It is the most abundant element in the body.
Popularity: 2 • Tools: Recategorize
The boiling point of copper is about 2562°C (4644°F) and the melting point is about 1085°C (1985°F).
Popularity: 2 • Tools: Recategorize
There is no element named "graphite", but graphite is a chemical element. It is an allotrope of carbon.
Popularity: 2 • Tools: Recategorize
CARBON this is the 100th time! can nobody use wikipedia!?
Popularity: 2 • Tools: Recategorize
the H2 will extinguish the fire
Popularity: 2 • Tools: Recategorize
At room temperature and pressure Aluminium is a solid.
Popularity: 2 • Tools: Recategorize
P= Pull pin, A= Aim at the base of the flames, S= Squeeze the trigger, S= Sweep back and forth
Popularity: 2 • Tools: Recategorize
It represents 2 valence electrons.
Popularity: 2 • Tools: Recategorize
atomic mass (the mass of an atom)
Popularity: 2 • Tools: Recategorize
melting point. :)
Popularity: 2 • Tools: Recategorize
the creation of an ionic compound. the two come together to form a new molecule.
Popularity: 2 • Tools: Recategorize
ammonia is form
Popularity: 2 • Tools: Recategorize
find out your assignment answers by yourself! we arent here to slove your assignment!!
Popularity: 2 • Tools: Recategorize
Al2O3
Popularity: 2 • Tools: Recategorize
In my science lad the mixture turned red. I don't know if it is the white colour of the baking soda making the iodine lighter or...
Popularity: 2 • Tools: Recategorize
No, it is a compound of elemental potassium.
Popularity: 2 • Tools: Recategorize
No, there is a huge variation in size. DNA and protein molecules are relatively huge. Water and oxygen molecules are quite small....
Popularity: 2 • Tools: Recategorize
Peptide Bonds are bonds that keep amino acids together Hydrogen Bonds are bonds that keep proteins together and give them their...
Popularity: 2 • Tools: Recategorize
They are lighter in density as compared to solids. Gas are compressible, whereas not all solids. Gases exhibit better flow...
Popularity: 2 • Tools: Recategorize
Merck Index states its miscible with water, alcohol and ether. Alcohol usually refers to ethanol.
Popularity: 2 • Tools: Recategorize
Liquid helium is a lot colder than liquid nitrogen.
Popularity: 2 • Tools: Recategorize
hydrogen peroxide
Popularity: 2 • Tools: Recategorize
A fatty acid is a carbon chain in lipids A lipid is a large, nonpolar, organic molecule. Most lipids contain fatty acids. This is...
Popularity: 2 • Tools: Recategorize
beating an egg is aphysical change because in order to have a chemical change, heat or some other chemical must be involed. so...
Popularity: 2 • Tools: Recategorize
its bottay bootay
Popularity: 2 • Tools: Recategorize
The molecules of ice are more far apart than those of liquid water, ultimately causing the ice to be less dense (and therefore...
Popularity: 2 • Tools: Recategorize
6 molecules of carbon dioxide .
Popularity: 2 • Tools: Recategorize
not only are there two but four: Poor conductors of heat and electricity. Brittle - if a solid. Nonductile. Do not possess...
Popularity: 2 • Tools: Recategorize
they are called groups
Popularity: 2 • Tools: Recategorize
Atoms are elements , e.g Hydrogen. Molecules are combinations of different atoms, e.g water H2O is the combination of Hydrogen...
Popularity: 2 • Tools: Recategorize
Oxygen is an element found on the period table. Its atom contains eight protons in its nucleus. It exists naturally as the...
Popularity: 2 • Tools: Recategorize
Scandium and Yttrium (actually many of the lanthanides and actinides are rare as well)
Popularity: 2 • Tools: Recategorize
true
Popularity: 2 • Tools: Recategorize
I think you need to rephrase your question. The correct (if unhepful) answer is that one carbon atom comprises one atom.Did you...
Popularity: 2 • Tools: Recategorize
When heat is applied to a liquid a transformation begins. As the temperature of the water increases it is aproaching its boiling...
Popularity: 2 • Tools: Recategorize
Yes. Hydrochloric acid, HCl, can cause severe burns if it comes in contact with skin or eyes. If you should have any accidentally...
Popularity: 1 • Tools: Recategorize
