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 3 minutes ago
ID3173019859
asked Ethanol chemical structure and said it was different from What is the Lewis structure of ethanol 8 minutes ago
ID3265945554
wrote the first answer to Is SCl a polar molecule 10 minutes ago
Gimmethatcat1234 [0]
wrote the first comment on Discussion: What is the chemical messenger of the nervous system 10 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
The grading 99.98, 99.95 etc indicate the purity of zinc. It refers to 99.98% of the metal being zinc. The higher the purity the...
Popularity: 12 • Tools: Recategorize
Natives of South America used the toxins secreted by the frog which are some of the most toxic biotoxins found to coat the heads...
Popularity: 12 • Tools: Recategorize
The number of protons and electrons will be the same as the elements atomic number which is 82. The number of neutrons will vary...
Popularity: 12 • Tools: Recategorize
The term acid rain or more accurately acid precipitation is commonly used to mean the deposition of acidic components in rain,...
Popularity: 12 • Tools: Recategorize
its all polar. The molecules are made up of two hydrogen and one oxygen molecule. They arrange themselves in a assymetrical way....
Popularity: 12 • Tools: Recategorize
One!The long and short of it is... one!Gold does not really form molecules but is made up of a lattice of gold atoms: these could...
Popularity: 12 • Tools: Recategorize
Neon has 10 protons, 10 neutrons and 10 electrons.
Popularity: 12 • Tools: Recategorize
RUBBING ALCOHOL is intended for use on the skin only. It was made in the old days for rubbing on the skin, on a inflammed Joint....
Popularity: 12 • Tools: Recategorize
Carbon-13 is a heavy isotope of carbon having a mass number of 13 (with 6 protons, 6 electrons and 7 neutrons). It makes up about...
Popularity: 12 • Tools: Recategorize
This may be a little challenging if you don't have a solid understanding of chemistry, but basically here is why: sodium...
Popularity: 12 • Tools: Recategorize
cement is a mixture of compounds and concrete is a compound made from cement. look it up in wikipedia
Popularity: 12 • Tools: Recategorize
Hydroxyl -OH is Hydrophilic (attracts water). This is due to the electronegativity of the oxygen atom in -OH which makes the...
Popularity: 12 • Tools: Recategorize
black mold spores asbestos fibers formaldehyde carbon dioxide build up radon gas build up exposed lead paint rat, mouse...
Popularity: 12 • Tools: Recategorize
try this website: the.herbarie.com
Popularity: 12 • Tools: Recategorize
Oxygen relights a glowing splint, but there is not enogh oxygen in the air to do this, but if you dissolve air in water it...
Popularity: 12 • Tools: Recategorize
The independent variable in Alka-Seltzer is sodium bicarbonate, also known as baking soda.
Popularity: 12 • Tools: Recategorize
All elements are made of protons, neutrons, and electrons. An atom of an element has the same number of electrons as it does...
Popularity: 12 • Tools: Recategorize
an ion has either more or less electrons then a neutral atom. electrons have an electrical negative charge so if you have too...
Popularity: 12 • Tools: Recategorize
A glass of cola is heterogeneous mixture because the ingredients are physically separate. Just look at the bubbles. That is proof...
Popularity: 12 • Tools: Recategorize
If it is carbonated and bubbly, then it is heterogeneous (because both liquid and gas are present). If the soda has gone flat...
Popularity: 12 • Tools: Recategorize
Popularity: 12 • Tools: Recategorize
Gallium Arsenide (GaAs) has a 2.5eV band gap (@ 295 K)
Popularity: 12 • Tools: Recategorize
ambient temperature
Popularity: 12 • Tools: Recategorize
the difference between the atomic number and the average weight
Popularity: 12 • Tools: Recategorize
The mass number tells you the sum of the number of protons and the number of neutrons in the nucleus of the atom
Popularity: 12 • Tools: Recategorize
Iron(III) Oxide or Ferric Oxide = Fe2O3
Popularity: 12 • Tools: Recategorize
Another name for it is a solution
Popularity: 12 • Tools: Recategorize
AnswerNot a substance, it is a pure compound. Each crystallic particle is pure NaCl, homogeneous
Popularity: 12 • Tools: Recategorize
Mercury will react with all metals except iron. Mercury will react with all metals except iron.
Popularity: 12 • Tools: Recategorize
In fact, electrons do leave their shells. Around atoms they only exist in shells (quantum energy states) but can change energy...
Popularity: 12 • Tools: Recategorize
toothpaste is an alkali because bacteria uses acid to eat away at teeth so toothpaste manufactures include alkali in their recipe...
Popularity: 12 • Tools: Recategorize
The melting point is 848 degrees celsius
Popularity: 12 • Tools: Recategorize
"Polyether" is a name given to a group of compounds that contain more than one ether group (R-O-R).
Popularity: 12 • Tools: Recategorize
No reaction. MgSO4 and HCl are the products of the reaction of magnesium chloride with sulfuric acid. MgCl + H2SO4 → MgSO4 +...
Popularity: 12 • Tools: Recategorize
ALUMINIUM (2nd most consumed metal) it is used in making many vehicles such as airplanes, gliders, aircrafts, spacecrafts, cars...
Popularity: 12 • Tools: Recategorize
Bromine is an electrophile (electron deficient species) it attacks the Carbon doubble bond and accepts a pair of electrons. this...
Popularity: 12 • Tools: Recategorize
Because more materials are dissolved by it than by any other solvent.
Popularity: 12 • Tools: Recategorize
1Until a Chemist can give a "chemistry" answer, I will use the answer from the perspective of wine making.Wine has many solids...
Popularity: 12 • Tools: Recategorize
mix 10 drops of methyl alcohol w/ 10 drops of distilled water in test tube heat copper coil in Bunsen flame and dip methyl...
Popularity: 12 • Tools: Recategorize
Every object is created by the microscopic pieces/atom or molecul/that are invisible by eyes.and all of them move and shake...
Popularity: 12 • Tools: Recategorize
to allow the correct amount of oxygen to enter and leave the substance
Popularity: 12 • Tools: Recategorize
Because that is what it is made of. Chemical formula is NaCl. 1 gram of salt has 0.3933 grams of sodium and 0.6067 grams of...
Popularity: 12 • Tools: Recategorize
By definition, matter is that which has mass.Investigate the Higgs Boson and you may find a satisfactory albeit theoretical...
Popularity: 12 • Tools: Recategorize
a carbon atom has no charge, but a carbon ion has a charge of 2+
Popularity: 12 • Tools: Recategorize
severe combined immunity deficiency
Popularity: 12 • Tools: Recategorize
Halogens.Group 7 elements are called halogens.
Popularity: 12 • Tools: Recategorize
Melting point of aluminium: 660,32 0C Boiling point of aluminium: 2 519 0C
Popularity: 12 • Tools: Recategorize
The cesium will react with the water and create an explosion. This is due to the fact that it is in the Alkali metals column,...
Popularity: 12 • Tools: Recategorize
Main parts of nuclear fussion reactor are: 1. The H2 and h3 ( the duterum and tritum atoms.) 2. The cooling rods of titanium...
Popularity: 12 • Tools: Recategorize
For a neutral atom they are the same
Popularity: 12 • Tools: Recategorize
Substances are hydrophobic because they are nonpolar. Nonpolar molecules are made up of elements with little difference in their...
Popularity: 12 • Tools: Recategorize
If a material allows free electrons to move easily from one atom to another then we call that material a conductor. Most metals...
Popularity: 12 • Tools: Recategorize
It is located, in the periodic table, with the metalloids. However, it is a transition metal.
Popularity: 12 • Tools: Recategorize
PV=nRT (.855 atm)(.490L)=n(.0821)(306ºKel) .419=25.1n n=.0167 moles O2 .5344g O2 old answer by some...
Popularity: 12 • Tools: Recategorize
Let's start with an element such as Carbon. C has 4 valence electrons on it's outer shell. To draw C simply put the letter C in...
Popularity: 12 • Tools: Recategorize
AnswerFat is an important part of a diet because every cell in the body requires fat. Women who do not get the required amount of...
Popularity: 12 • Tools: Recategorize
Solvents are substances, usually in the liquid phase, that have or can have other substances (solutes) dissolved in them. For...
Popularity: 12 • Tools: Recategorize
A suspension is a mixture of water and a non-dissolved material.answer A mixture in which fine particles are suspended in a fluid...
Popularity: 12 • Tools: Recategorize
Covalent bondig will happen between two nonmetals, these metals may share a pair or pairs of electrons between each other.
Popularity: 12 • Tools: Recategorize
colored things have molecules with chromophores (areas of a molecule with double bonds between the carbon and oxygen atoms),...
Popularity: 12 • Tools: Recategorize
as a spray to kill certain fungus
Popularity: 12 • Tools: Recategorize
For oxidation, which is a natural build up of loose oxygen electrons, the best products to use are pure liquid non abrasive...
Popularity: 12 • Tools: Recategorize
So far, it takes so much more power to generate fusion than it produces. No one's been able to produce it on an industrial scale,...
Popularity: 12 • Tools: Recategorize
energy is given out. this is emitted in the form light ie each atom has its own characteristic emission spectra.
Popularity: 12 • Tools: Recategorize
neutrally charged ones All atoms have the same number of protons and electrons, that's why they're electrically neutral. The...
Popularity: 12 • Tools: Recategorize
Trimethylsilyl azide is often used as a safer replacement for hydrazoic acid in organic synthesis. An example is the synthesis of...
Popularity: 12 • Tools: Recategorize
No, paint is a Colloid. Answer 2 I disagree....... A colloid is heterogenous, since it has a disperse phase (eg. solid...
Popularity: 12 • Tools: Recategorize
Answerthe best cleaner I have found is the fire sauce from taco bell... also lemon juice
Popularity: 12 • Tools: Recategorize
Like dissolves like. Water and oil do not mix because water molecules are polar (i.e., having either a positive or negative...
Popularity: 12 • Tools: Recategorize
The Ionisation energy of an atom is the amount of energy (usually electrical) required for one mole of electrons to be taken away...
Popularity: 12 • Tools: Recategorize
(physics) The volume of 1 mole of a gas at a pressure of 1 atmosphere and a temperature of 0°C. Also known as normal...
Popularity: 12 • Tools: Recategorize
it describes what are metals, non-metals and what are metalloids (semi-metals) group 1: Alkali Metals (reactive) group 2:...
Popularity: 12 • Tools: Recategorize
hey can u answer this r u a dike? theres a question for ya.................
Popularity: 12 • Tools: Recategorize
I don't know what a "grcaco3" is, but if you are asking how to convert from milligrams to grams, the anwer is: divide by 1,000.
Popularity: 12 • Tools: Recategorize
Advantage: It Burns Your Trash and Keeps it from Going to a Landfill (taking less space and making trash in the landfills...
Popularity: 12 • Tools: Recategorize
Used as a "color test for pine wood" and in the synthesis of organic chemicals; [HSDB] There are associated diseases listed with...
Popularity: 12 • Tools: Recategorize
Reaction of sodium acetate and sulfuric acid is: Na-Acetate + H2SO4 --> Na2SO4 + H-Acetate The reaction results are Sodium...
Popularity: 12 • Tools: Recategorize
When they attempt to stabilize themselves. For atoms to be stable they have to have a full outer shell of electrons and so they...
Popularity: 12 • Tools: Recategorize
they do this cause of the melting point
Popularity: 12 • Tools: Recategorize
The most simple pipette is a tube of plastic or glass having a tip with a small hole, used to transfer liquids. Now, many more...
Popularity: 12 • Tools: Recategorize
Solid Carbon Dioxide Solid carbon dioxide is dry ice.
Popularity: 12 • Tools: Recategorize
limiting reactant controls the amount of product formed in a chemical reaction due to its smaller amount.
Popularity: 12 • Tools: Recategorize
The exact person who first discovered iron is unknown, because its first uses predate any reliable historical records.
Popularity: 12 • Tools: Recategorize
AnswerDensity is the ratio of mass by volume.While specific gravity is the ratio of the weight of a substance to the weight of an...
Popularity: 12 • Tools: Recategorize
It takes 32 miliseconds but keeps relighting so fast that we don't even realize it.
Popularity: 12 • Tools: Recategorize
There are 22 electrons in titanium.
Popularity: 12 • Tools: Recategorize
Your blood stops flowing. Without oxygen the blood turns blue, causing the dead to look pale. The blood will be drained out...
Popularity: 12 • Tools: Recategorize
Ithink it may be because it produces metal oxides when magnesium is burnt and this does not happen to woods
Popularity: 11 • Tools: Recategorize
