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Chemistry Forum

Join the expert discussion on chemistry. Chemistry is the study of the nature, properties, and composition of matter. Biochemistry, Organic, Inorganic, Analytical are topics that may be discussed.

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Identifying Illegal Fuel in My Country: Tips for Detecting Fuel-Kerosene Mixture

Dec 5, 2015 · Replies 21 · Dec 21, 2015

Replies: 21

Views: 3K

Acetone in water influence its enthelpy of vaporization

Dec 17, 2015 · Replies 4 · Dec 20, 2015

Replies: 4

Views: 3K

Engaging experiment involving chromate and acidity?

Dec 20, 2015 · Replies 1 · Dec 20, 2015

Replies: 1

Views: 1K

Carbanion Stability: Why is s Character Important?

Dec 19, 2015 · Replies 1 · Dec 19, 2015

Replies: 1

Views: 3K

Why does the mass stay the same during combustion?

Dec 19, 2015 · Replies 2 · Dec 19, 2015

Replies: 2

Views: 1K

Partition coefficient of chlorpromazine in DMSO & pentane

Dec 15, 2015 · Replies 24 · Dec 17, 2015

Replies: 24

Views: 4K

Phase changes, change of entropy is temperature independent

Dec 6, 2015 · Replies 21 · Dec 16, 2015

Replies: 21

Views: 7K

What are some liquids that can give up valence electrons when heated?

Dec 15, 2015 · Replies 1 · Dec 16, 2015

Replies: 1

Views: 2K

Creating free superoxide in air

Dec 15, 2015 · Replies 2 · Dec 15, 2015

Replies: 2

Views: 1K

Measuring pH on metallic planar surface

Dec 14, 2015 · Replies 4 · Dec 14, 2015

Replies: 4

Views: 2K

What is the relationship between relative mass and molar mass?

Dec 12, 2015 · Replies 1 · Dec 12, 2015

Replies: 1

Views: 2K

Volume of 1 Mole O2 & CO2 at Same Temperature & Pressure

Dec 11, 2015 · Replies 2 · Dec 12, 2015

Replies: 2

Views: 2K

What is the Best Method for Producing Iron Oxide Nanoparticles?

Dec 9, 2015 · Replies 1 · Dec 11, 2015

Replies: 1

Views: 2K

Possibility and detection of this chemical equilibrium

Dec 9, 2015 · Replies 4 · Dec 10, 2015

Replies: 4

Views: 1K

Solvent for cinnamaldehyde extraction?

Dec 8, 2015 · Replies 2 · Dec 9, 2015

Replies: 2

Views: 3K

APCP Autoignition: Pressure Deflagration Start

Dec 8, 2015 · Replies 3 · Dec 9, 2015

Replies: 3

Views: 2K

Can "mole" unit only be integer values?

Nov 26, 2015 · Replies 15 · Dec 8, 2015

Replies: 15

Views: 4K

Constant Volume Calorimetry - Why does (ΔnRT)=(Δn)RT

Nov 30, 2015 · Replies 10 · Dec 8, 2015

Replies: 10

Views: 5K

Half equations for molten hydroxide electrolysis

Dec 1, 2015 · Replies 3 · Dec 8, 2015

Replies: 3

Views: 6K

Why cations migrate toward cathode?

Nov 28, 2015 · Replies 13 · Dec 6, 2015

Replies: 13

Views: 11K

Fading Marker Ink: What's Happening?

Nov 19, 2015 · Replies 3 · Dec 6, 2015

Replies: 3

Views: 2K

Can We Create an Endless Loop of Energy with Water?

Nov 22, 2015 · Replies 11 · Dec 6, 2015

Replies: 11

Views: 2K

Relating excited state molecular emission to chemical reaction

Dec 3, 2015 · Replies 1 · Dec 6, 2015

Replies: 1

Views: 2K

Mechanism of tautomerisation in AgCN and AgNC?

Dec 5, 2015 · Replies 3 · Dec 5, 2015

Replies: 3

Views: 2K

Is Electrostatic Ion Separation Possible for Industrial Element Separation?

Dec 4, 2015 · Replies 2 · Dec 4, 2015

Replies: 2

Views: 2K

Heterolytic and Homolytic Cleavage

Nov 30, 2015 · Replies 1 · Dec 3, 2015

Replies: 1

Views: 2K

Biodiesel from Used Cooking Oil: Is the Pollution Lower?

Dec 2, 2015 · Replies 3 · Dec 3, 2015

Replies: 3

Views: 2K

Not understanding Fischer projections

Dec 3, 2015 · Replies 4 · Dec 3, 2015

Replies: 4

Views: 2K

What determines the colour of chromium compounds?

Dec 2, 2015 · Replies 2 · Dec 3, 2015

Replies: 2

Views: 2K

Resist adhesion to Borosilicate glass for BOE etching

Dec 2, 2015 · Replies 1 · Dec 2, 2015

Replies: 1

Views: 2K

Are Noble Gas Compounds Possible?

Dec 2, 2015 · Replies 1 · Dec 2, 2015

Replies: 1

Views: 2K

Organic Chemistry Nucleophile Reactivity Rate

Nov 29, 2015 · Replies 3 · Nov 29, 2015

Replies: 3

Views: 7K

Resonance structures of aryl or vinyl carbocations

Nov 24, 2015 · Replies 4 · Nov 29, 2015

Replies: 4

Views: 5K

Gaging Time with Chemical Clocks: A Crazy Idea?

Nov 27, 2015 · Replies 2 · Nov 27, 2015

Replies: 2

Views: 2K

Peptide Bond Dissociation Temperaure

Nov 27, 2015 · Replies 2 · Nov 27, 2015

Replies: 2

Views: 2K

Freezing/Melting of water and gibbs free energy

Nov 22, 2015 · Replies 15 · Nov 27, 2015

Replies: 15

Views: 12K

Can helium prevent ozone formation in electron-plasma chemistry?

Nov 19, 2015 · Replies 1 · Nov 25, 2015

Replies: 1

Views: 2K

Can Boric Acid or Detergents Increase the Density of Silicone Oil?

Nov 19, 2015 · Replies 1 · Nov 25, 2015

Replies: 1

Views: 2K

Plant Freezing at -20C: No Power & 5700 GPM

Nov 25, 2015 · Replies 3 · Nov 25, 2015

Replies: 3

Views: 2K

What is the science behind desulfation of batteries and how does it work?

Nov 23, 2015 · Replies 3 · Nov 24, 2015

Replies: 3

Views: 2K

Book says threonine has chiral center in its sidechain? How?

Nov 24, 2015 · Replies 1 · Nov 24, 2015

Replies: 1

Views: 2K

Under ideal conditions could there be thousands of elements?

Nov 23, 2015 · Replies 6 · Nov 24, 2015

Replies: 6

Views: 2K

Recovering energy from plastics

Oct 21, 2015 · Replies 8 · Nov 24, 2015

Replies: 8

Views: 2K

How Do Electrons Form a Bond in Covalent Bonding Despite Their Mutual Repulsion?

Nov 23, 2015 · Replies 5 · Nov 23, 2015

Replies: 5

Views: 3K

Are molecules only held together by Covalent bonds?

Nov 21, 2015 · Replies 6 · Nov 23, 2015

Replies: 6

Views: 15K

Inductive Effect: Why Does Charge Decrease?

Nov 4, 2015 · Replies 7 · Nov 21, 2015

Replies: 7

Views: 2K

Are All Chemical Reactions Reversible?

Nov 21, 2015 · Replies 3 · Nov 21, 2015

Replies: 3

Views: 2K

Lattice energy and energy required to vaporize MgO ?

Nov 19, 2015 · Replies 11 · Nov 21, 2015

Replies: 11

Views: 4K

Standard Solutions for Raman Spectroscopy of TiO2

Nov 19, 2015 · Replies 2 · Nov 21, 2015

Replies: 2

Views: 2K

Irreversible reaction in a battery

Nov 20, 2015 · Replies 2 · Nov 20, 2015

Replies: 2

Views: 2K

Does Bromine (Br2) dissolve in water?

Nov 20, 2015 · Replies 3 · Nov 20, 2015

Replies: 3

Views: 8K

Nucleophilic Substitution Reaction: CH3Cl + AgF

Nov 19, 2015 · Replies 10 · Nov 20, 2015

Replies: 10

Views: 2K

Orbital Energy: Does It Exist Without Electrons?

Nov 16, 2015 · Replies 11 · Nov 19, 2015

Replies: 11

Views: 2K

Notation of mass number of an element

Nov 19, 2015 · Replies 2 · Nov 19, 2015

Replies: 2

Views: 1K

How to make nickel gallium compund? Basic advice / direction

Nov 19, 2015 · Replies 1 · Nov 19, 2015

Replies: 1

Views: 1K

Avogadro's Law & Composition of Air: A Doubt/Misconception

Nov 17, 2015 · Replies 6 · Nov 18, 2015

Replies: 6

Views: 2K

2- butoxyethanol alternative wanted

Nov 11, 2015 · Replies 1 · Nov 17, 2015

Replies: 1

Views: 3K

Auto ignition temperature in pure O2

Nov 7, 2015 · Replies 8 · Nov 16, 2015

Replies: 8

Views: 10K

Do phosphorus allotropes produce the same liquid?

Nov 14, 2015 · Replies 1 · Nov 16, 2015

Replies: 1

Views: 2K

Nitrogen Ground State: 2s^2 2p^3 ^4 S_{3/2}

Nov 13, 2015 · Replies 1 · Nov 16, 2015

Replies: 1

Views: 3K

Acid Base Confusion: Solutions to Common Questions

Nov 16, 2015 · Replies 2 · Nov 16, 2015

Replies: 2

Views: 2K

Hydrogen Emission Spectrum, Electrons, and Quantized Energy

Nov 13, 2015 · Replies 3 · Nov 16, 2015

Replies: 3

Views: 2K

Release or absortion of energy on bonds and phase change

Nov 13, 2015 · Replies 3 · Nov 15, 2015

Replies: 3

Views: 2K

Maintaining Charge Separation: The Role of EMF in Electrochemical Cells

Nov 10, 2015 · Replies 5 · Nov 14, 2015

Replies: 5

Views: 2K

Superatom Chemistry: Where to Find Info & What's Going On?

Nov 7, 2015 · Replies 4 · Nov 14, 2015

Replies: 4

Views: 2K

Why NCl3 is dipole-dipole in intermolecular force?

Nov 14, 2015 · Replies 6 · Nov 14, 2015

Replies: 6

Views: 12K

Planning to take a high school Chemistry licensing exam....

Nov 12, 2015 · Replies 1 · Nov 13, 2015

Replies: 1

Views: 1K

Effusion of gas from higher to lower concentration under same pressure

Oct 27, 2014 · Replies 9 · Nov 13, 2015

Replies: 9

Views: 3K

Can an atom exist without any electron?

Nov 11, 2015 · Replies 8 · Nov 11, 2015

Replies: 8

Views: 11K

Is energy a particle or a wave?

Nov 3, 2015 · Replies 7 · Nov 9, 2015

Replies: 7

Views: 2K

How does bicarb soda dissolve gypsum in plaster form?

Nov 4, 2015 · Replies 5 · Nov 6, 2015

Replies: 5

Views: 13K

Soap and water not suitable for washing paint thinner off?

Nov 6, 2015 · Replies 1 · Nov 6, 2015

Replies: 1

Views: 15K

Trouble with Gibbs free energy equation

Nov 4, 2015 · Replies 8 · Nov 6, 2015

Replies: 8

Views: 2K

Can Color Change Affect UV-Vis Spectrometry Readings at 270 nm?

Nov 4, 2015 · Replies 1 · Nov 4, 2015

Replies: 1

Views: 1K

Why Use Nitric Acid for Heavy Metal Digestion?

Nov 3, 2015 · Replies 4 · Nov 4, 2015

Replies: 4

Views: 2K

NBS vs radical HBr in the bromination of olefins

Nov 2, 2015 · Replies 2 · Nov 3, 2015

Replies: 2

Views: 13K

Need Help understanding energy and enthelpy please

Oct 21, 2015 · Replies 6 · Nov 3, 2015

Replies: 6

Views: 2K

Proper chemical to dissolve/decompose adhesive scotch tape

Nov 2, 2015 · Replies 2 · Nov 2, 2015

Replies: 2

Views: 2K

Why Doesn't Coal Burn with a Flame?

Sep 19, 2013 · Replies 4 · Nov 2, 2015

Replies: 4

Views: 3K

Cigarette lighter in the fridge?

Oct 14, 2015 · Replies 6 · Nov 2, 2015

Replies: 6

Views: 11K

What causes the difference in reactivity between alkali metals?

Oct 22, 2015 · Replies 2 · Nov 2, 2015

Replies: 2

Views: 1K

Why doesn't chlorine in seawater evaporate?

Mar 24, 2013 · Replies 16 · Nov 2, 2015

Replies: 16

Views: 10K

Why is C-Cl bond in acyl chloride more reactive despite being highly polarized?

Oct 30, 2015 · Replies 5 · Nov 1, 2015

Replies: 5

Views: 2K

Ketones behaviour towards isomerism?

Oct 31, 2015 · Replies 1 · Nov 1, 2015

Replies: 1

Views: 1K

Why HCl is polar covalent compound?

Oct 30, 2015 · Replies 1 · Oct 30, 2015

Replies: 1

Views: 3K

Water activity meter reading over 1

Oct 14, 2015 · Replies 5 · Oct 30, 2015

Replies: 5

Views: 2K

Lower and Higher Heating Values of Coal: Why do they exist?

Oct 27, 2015 · Replies 3 · Oct 29, 2015

Replies: 3

Views: 4K

Does combustion have to produce gaseous CO2?

Sep 8, 2015 · Replies 32 · Oct 28, 2015

2

Replies: 32

Views: 7K

Gauche Effect & SN2 Reactions: Sigma-Sigma* Orbital Interactions

Oct 27, 2015 · Replies 3 · Oct 28, 2015

Replies: 3

Views: 2K

Thiophene synthesis using H2S, HCl, and 1,4 diketone

Oct 23, 2015 · Replies 4 · Oct 26, 2015

Replies: 4

Views: 3K

What is the significance of d (x^2-y^2) in the d subshell?

Jun 30, 2014 · Replies 3 · Oct 25, 2015

Replies: 3

Views: 6K

Calculate concentration of an acid

Oct 24, 2015 · Replies 2 · Oct 25, 2015

Replies: 2

Views: 1K

Is litmus test a reliable criterion for classifying compounds as acids or bases?

Aug 13, 2015 · Replies 11 · Oct 25, 2015

Replies: 11

Views: 5K

Boiling Point of Rubbing Alcohol Lab | In-Class Experiment

Oct 24, 2015 · Replies 13 · Oct 24, 2015

Replies: 13

Views: 2K

Why is the Definition of Entropy Restricted to a Reversible Process?

Oct 22, 2015 · Replies 1 · Oct 23, 2015

Replies: 1

Views: 2K

Thermite reaction on stove top?

Oct 17, 2015 · Replies 3 · Oct 22, 2015

Replies: 3

Views: 2K

Variations in bubble persistance

Oct 22, 2015 · Replies 1 · Oct 22, 2015

Replies: 1

Views: 2K

Is bismuth safe to handle (touching, carrying it around....)?

Jul 28, 2015 · Replies 12 · Oct 22, 2015

Replies: 12

Views: 41K

Gauche effect in 2-fluoroethanol

Oct 16, 2015 · Replies 1 · Oct 19, 2015

Replies: 1

Views: 5K

High School Students: Chemistry, Ionic/Covalent Bonds, Urea & Hydroxyurea

Oct 14, 2015 · Replies 3 · Oct 16, 2015

Replies: 3

Views: 2K

Chemistry

Welcome to the Chemistry forum!

Chemistry is the scientific study of matter, its properties, composition, structure, and the changes it undergoes during chemical reactions. It plays a central role in understanding the building blocks of the universe, encompassing the study of atoms, molecules, elements, and compounds.

Chemists investigate the interactions and forces between particles at the atomic and molecular levels, contributing to our understanding of various natural phenomena. The field is divided into branches such as organic chemistry, inorganic chemistry, physical chemistry, and biochemistry, each focusing on specific aspects of chemical systems.

Chemistry is not only a foundational science but also a driving force behind technological advancements, materials development, pharmaceuticals, and numerous industrial applications.

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