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    exothermic process

    chemical reaction or physical change that releases heat

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Questions & Answers

what exactly is e question based on
Snoe Reply
The test tubes shown here contain equal amounts of the specified motor oils. Identical metal spheres were dropped at the same time into each of the tubes, and a brief moment later, the spheres had fallen to the heights indicated in the illustration. Rank the motor oils in order of increasing viscosity, and explain your reasoning:
Latosha Reply
Where are the test tubes
Zakaria
same question as zakariah
Salvador
send me
Benjii
dont know
Alok
what is atom
Abba Reply
smallest particle of an element
Delma
an atom is a smallest particle an element that always takes the property of that element and can take part in chemical reaction
jason
guys I'm sorry I dont understand this application are you human beings or robots
Delma
Homo sapiens
Zakaria
hhhhh
Abdelkebir
atom is smallest particular which can not further divided
ZeShan
atom is the basic unit of matter that consist of dense Central nucleus sorronded by the clouds of negatively changed electrons.
Kibela
when making a chemical reaction how do u know the product of the reactant
Delma
As long as you know the reactants, you can definitely know the product
Francis
specifically I am talking about the bonding
Delma
depending on the nature of the rectants
Francis
what is compressibility Factor?
Francis
z=pv/RT is unity for ideal gas
ZeShan
what are alkanes used for
emeka Reply
it depends which alkane. Just Google 'list alkane and use' looking at fractional distillation may help too
Adelle
superb
Alok
What is chemistry
monica Reply
chemistry is the understanding the concept of Matter
kingsley
there are thousands of concepts to explain what is. chemistry...
Alok
industrial chemistry and its features
David Reply
what is physical properties
hodan Reply
is the feutures that the thing have or what thing have in their physical shape
Fayruusa
it is thi features than an element or compound have and these features are used to differentiate these elements or compounds
tadiwa
what is saponification
nwogwugwu Reply
Saponification- soaps are sodium or potassium salts of long chain fatty acids... It's basically turning fat/oil into soap. There was some other definition too, that i don't remember at the moment. Sorry! ;)
Bridgette
industrial use of hydrogen
nwogwugwu Reply
hydrogen is used for industrial applications such as refining, treating metals, and food processing. Liquid hydrogen is the fuel that once propelled the space shuttle and other rockets. ... 
Mark
what's flint
Malcom Reply
what is hydrocarbon
MICHEAL Reply
hydrocarbon consist of hydrogen and carbon
Hedosco
correct
magnus
what is alkenes
Shophetim Reply
alkenes are molecules that have a carbon carbon double bond
Adelle
the carbon contain hydrogen hydrogen double bond
Vishal
You can't get hydrogen hydrogen double bonds. Hydrogen bonds so it has a full outer shell. hydrogen has 1 electron and only needs one more go obtain outer shell stability.
Adelle
oxygen exists as a double bond. How about carbon monoxide
Delma
in carbon monoxide 3 bond between c and o and lone pair of electron on each
ZeShan
sorry, I didn't quite understand
Delma
There is a triple covalent bond between C and O and both has a lone pair of electrons. Thus both has a full shell of valence electrons.
Attila
What is the PDF of iron
William Reply
What is catalyst
William Reply
a catalyst increase the rate of chemical reactions without becoming apart of it...ex vitamins and minerals
Coach
catalyst is a substance added to the reaction that modifies the rate of the reaction ( make it happen faster or in some cases slower).
Attila
catalyst speeds up the rate of chemical reaction and has no effect in the product
Joesph
catalyst are substance that tends tew speed up the rate of reactions
Kedeh
1. Describe element that contain 4 protons in the outermost Shell (using 3 pages) 2. Explain why charges to mass ratio of all cathode drains are the same
omodunbi Reply

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Source:  OpenStax, Chemistry. OpenStax CNX. May 20, 2015 Download for free at http://legacy.cnx.org/content/col11760/1.9
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