Chemistry Assignment Help from PhD Experts
HelpWithAssignment provides perfect chemistry assignment help and chemistry homework help to students all over the world. Our pool of extremely talented chemistry assignment experts will shed light on the areas of chemistry you face difficulty and in no time the chemistry assignment solution and chemistry homework solution will be delivered to you. HelpWithAssignment has definitely earned the reputation of being one of the best chemistry assignment solution providers in the industry. All our chemistry assignment experts and chemistry homework experts are equipped with PhDs in the different domains of chemistry and they hold both academic knowledge and professional experience to work on your college level chemistry assignment solutions.
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What is Chemistry?
The word chemistry comes from the word alchemy. It was an ancient set of practices, which encompassed elements of magic and science. An alchemist was one who practiced this art of alchemy. Later on an alchemist was called a chemist in popular speech from which the word chemistry was derived by adding a “ry” in the end.
Chemistry as a science was developed as a science only under the influence of scientists such as Sir Francis Bacon, Robert Boyle and John Mayow. Organic chemistry was developed by Justus Von Liebig and Friedrich Wohler.
Basic Principles of Chemistry:
1. Matter
Chemistry is basically a study of matter. A matter is defined as anything with rest mass and volume. A matter can be a pure chemical substance or a combination of substances. Any matter we can touch, taste or feel is made up of atoms.
2. Atom
An atom is a constitutive element of a matter. It is made up of a dense core called nucleus. It is made up positively charged protons and uncharged neutrons. It is surrounded by an electron cloud made up of negatively charged electrons.
3. Chemical Element
A chemical element is made up of a single type of atom and a particular number of protons.
4. Chemical Compound
A pure chemical substance composed of more than one element is called a chemical compound.
- Molecule: Molecule is the smallest indivisible portion of a chemical substance that has a definite set of chemical properties and has the ability to undergo chemical change.
5. Mixture
A collection of substances is called a mixture like air and alloys.
Basic Processes of Chemistry:
1. Chemical Bond
Atoms sticking together in molecules and crystals are said to be in a chemical bond. New chemical substances are formed when chemical bonding takes place between two different atoms.
2. Energy
It is the attribute of a substance because of its atomic, molecular or total structure. During a chemical reaction, the chemical structure changes, as such it is accompanied an increase or decrease of energy.
3. Chemical Reaction
When a chemical substance is transformed because of its interaction with another substance, a chemical reaction is said to have taken place.
4. Acid-Base Reaction
A substance can be classified either as an acid or a base. An acid is a chemical substance which is characterized by its sour taste, its ability to transform blue litmus red and its ability to react with base. A base on the other hand is a substance that in an aqueous solution is slippery to touch, tu
s red litmus paper blue and reacts with acid to form salts. A chemical reaction between an acid and a base is called acid-base reaction.
5. Chemical equilibrium
Chemical equilibrium is that stage in a chemical reaction when both the reactants and the products are present in concentrated forms and have no further ability to change with time.
Basic Chemical Laws:
Chemistry assignment help can be made easy if you keep these chemical laws handy.
1. Avogadro’s laws
“Equal volumes of all gases, at the same temperature and pressure will have the same number of molecules”.
2. Boyle’s law
“The absolute pressure exerted by a given mass of an ideal gas is inversely proportional to the volume it occupies if the temperature and amount of gas remains unchanged within a closed system”.
3. Charles law
“When the pressure of simple dry gas is held constant, the Kelvin temperature and the volume will be directly related”.
4. Henry’s law:
“The solubility of a gas in a liquid is directly proportional to the partial pressure of the gas in equilibrium with that liquid”
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Chemistry Tutors
Backgrounds of Our Chemistry Assignment Experts:
- Currently pursuing her second PhD in thermal radiation, our head chemistry assignment expert is associated with a top university in Texas. She has done extensive research on chemical mechanism and is being associated with us for more than 8 years now.
- Holding a PhD in the field of compressible chemical fluids, our next online chemistry assignment expert is associated with a top university in New York. She has done various research and helped students with chemistry assignments.
- Having completed his master degree from one of the premier institutes of Chicago he is currently employed with a reputed chemical purifying company as a senior scientist. Having a keen research oriented writing style he is passionate about helping students with their chemical engineering distillation assignments.
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