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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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Electron Pairs, Outer Shells and Covalent Sharing

Cheman
Jun 28, 2004 · Replies 12 · Jun 30, 2004

Replies: 12

Why Does Water Expand When Frozen?

north
Jun 28, 2004 · Replies 4 · Jun 29, 2004

Replies: 4

Find the heat content per gram of peanut

y_foss
Jun 27, 2004 · Replies 1 · Jun 28, 2004

Replies: 1

How to calculate molecular formula

BH20
Jun 9, 2004 · Replies 84 · Jun 28, 2004

3

Replies: 84

What Gas is Produced from H2O+HCL?

wasteofo2
Jun 24, 2004 · Replies 8 · Jun 27, 2004

Replies: 8

Question 'bout the periodic table

NanakiXIII
Jun 22, 2004 · Replies 7 · Jun 25, 2004

Replies: 7

Kc Calculation for BrF5 ↔ Br2 + 5F2 Reaction

Mag
Jun 24, 2004 · Replies 2 · Jun 24, 2004

Replies: 2

Help a Lost Student: Calculating Heat Transfer in H2O

wunderkind
Jun 23, 2004 · Replies 1 · Jun 23, 2004

Replies: 1

Rate law seconds and concentration

Mag
Jun 22, 2004 · Replies 2 · Jun 22, 2004

Replies: 2

Calculating Heat Of Combustion

dcl
Jun 14, 2004 · Replies 2 · Jun 21, 2004

Replies: 2

Shake it to Light: The Magic of Mechanoluminescence

SAZAR
Jun 18, 2004 · Replies 10 · Jun 20, 2004

Replies: 10

Master Your Chemistry Exam with Expert Tips and Tricks!

dduardo
Jun 19, 2004 · Replies 6 · Jun 20, 2004

Replies: 6

Please tell me why they carbonate drinks?

tumor
Jun 13, 2004 · Replies 4 · Jun 19, 2004

Replies: 4

Exploring Froth Flotation & Negative Energy of Activation

Evil
Jun 18, 2004 · Replies 2 · Jun 18, 2004

Replies: 2

Why can't you TIG weld Aluminium with DC current?

Adrian Baker
Jun 17, 2004 · Replies 2 · Jun 18, 2004

Replies: 2

Help Answer Review Questions by Friday Morning

ChemRookie
Jun 17, 2004 · Replies 3 · Jun 17, 2004

Replies: 3

What are the calculations for creating a sodium chloride solution?

b_ball_gurl87
Jun 15, 2004 · Replies 2 · Jun 16, 2004

Replies: 2

How Do You Calculate Mass and Volume in Different Scenarios?

terpsgirl
Jun 15, 2004 · Replies 1 · Jun 16, 2004

Replies: 1

Does anyone know how to do these two questions?

b_ball_gurl87
Jun 16, 2004 · Replies 1 · Jun 16, 2004

Replies: 1

Solving Trimethylacetic Acid Concentration Questions

dcl
Jun 14, 2004 · Replies 2 · Jun 14, 2004

Replies: 2

Simple Gas mass/volume Question

dcl
Jun 12, 2004 · Replies 4 · Jun 14, 2004

Replies: 4

Q&A: Avagadro's Gas Law - Pressure Exerted on or by Gas

Cheman
Jun 13, 2004 · Replies 2 · Jun 13, 2004

Replies: 2

Entalpy Change: Pressure & Temperature Effects

yifan
May 9, 2004 · Replies 2 · Jun 13, 2004

Replies: 2

Gas with greatest molecular weight

Loren Booda
Jun 7, 2004 · Replies 5 · Jun 13, 2004

Replies: 5

Where Can I Find Affordable Bulk Chemicals for Scientific Research?

kronchev
Apr 1, 2004 · Replies 12 · Jun 13, 2004

Replies: 12

Like Dissolves Like: Solvents, Solutes, and Phospholipids

Cheman
Jun 11, 2004 · Replies 2 · Jun 11, 2004

Replies: 2

Solve Your Heat of Fusion Lab with These Helpful Equations and Tips

Quantum Foam
May 29, 2004 · Replies 3 · Jun 10, 2004

Replies: 3

Help Calculate Chlorine Volume @STP: 2.99x10^23 molecules

called2serve
May 5, 2004 · Replies 3 · Jun 10, 2004

Replies: 3

Chemistry imitating art: Borromean knot created

Monique
Jun 3, 2004 · Replies 1 · Jun 9, 2004

Replies: 1

Does a substances friction increase with increased heat?

wasteofo2
Jun 8, 2004 · Replies 3 · Jun 9, 2004

Replies: 3

Rates and Hess' Law: Questions and Answers

babbagee
Jun 6, 2004 · Replies 2 · Jun 6, 2004

Replies: 2

Seeding the atmosphere with aluminum oxide: A good idea?

Ivan Seeking
Feb 14, 2004 · Replies 3 · Jun 6, 2004

Replies: 3

Activation Energy: Oxygen + Hydrogen - Electrons & Energy

tumor
Jun 4, 2004 · Replies 4 · Jun 4, 2004

Replies: 4

What Makes Moles Essential in Understanding Chemistry?

recon
May 27, 2004 · Replies 4 · Jun 4, 2004

Replies: 4

Comparing Calcium Carbonate in 2 Shells - Help Needed

jan
May 2, 2004 · Replies 2 · Jun 3, 2004

Replies: 2

Can Lightning Shatter a Diamond in the Desert?

Thallium
May 19, 2004 · Replies 7 · Jun 2, 2004

Replies: 7

What is fire: energy or element?

Kerrie
May 29, 2004 · Replies 14 · Jun 2, 2004

Replies: 14

XX: Create a Better Explosion in a Controlled Environment

numberPI
May 31, 2004 · Replies 1 · Jun 2, 2004

Replies: 1

Formula and structure of the carbonate?

no idea
May 29, 2004 · Replies 2 · Jun 1, 2004

Replies: 2

What Are the Job Options with a B.S. in Chemistry?

Scalfani
May 27, 2004 · Replies 1 · May 28, 2004

Replies: 1

News Weapons of Mass Destruction found already.

ptex
May 17, 2004 · Replies 36 · May 28, 2004

2

Replies: 36

What is the best way to determine the mass percentage of NaOH in Plumbo?

Thallium
May 26, 2004 · Replies 3 · May 28, 2004

Replies: 3

What are the key differences between ATP and ADP?

Pattielli
May 19, 2004 · Replies 2 · May 27, 2004

Replies: 2

Poll

Synthetic vs. Natural Diamonds: Is There a Difference?

Imparcticle
May 12, 2004 · Replies 14 · May 27, 2004

Replies: 14

Purification of sodium chloride

Faizan
May 23, 2004 · Replies 6 · May 26, 2004

Replies: 6

Attractive and replusive forces

walker
May 24, 2004 · Replies 1 · May 24, 2004

Replies: 1

Increasing Voltage of Potato Battery in Chemistry Class

stokes173
May 22, 2004 · Replies 2 · May 22, 2004

Replies: 2

Safety of chemical experiments at home

bjon-07
May 1, 2004 · Replies 2 · May 22, 2004

Replies: 2

Determining the colors of transition metal

Faizan
May 21, 2004 · Replies 1 · May 22, 2004

Replies: 1

Balancing Redox Reactions: How to Determine Half Reactions and Oxidation Numbers

MaxNumbers
May 12, 2004 · Replies 3 · May 13, 2004

Replies: 3

Some quick problems before my exam 2morrow

ACLerok
May 9, 2004 · Replies 1 · May 13, 2004

Replies: 1

Kerosene Oil: Why It Won't Catch Fire in a Bottle

Vijay
May 11, 2004 · Replies 1 · May 13, 2004

Replies: 1

Equation Sheet on AP Chem Exam: Necessary or Not?

Swirly_Gryl_25
May 10, 2004 · Replies 3 · May 11, 2004

Replies: 3

What is fluorescence and how does it arise?

retupmoc
May 6, 2004 · Replies 1 · May 10, 2004

Replies: 1

Understanding Enthalpy and Entropy: Key Factors in Chemical Reactions

yifan
May 7, 2004 · Replies 2 · May 10, 2004

Replies: 2

Is CH3OCH3 Polar and Does XeF2 Have Polarity?

osaka
May 5, 2004 · Replies 5 · May 9, 2004

Replies: 5

Chemistry Forums - Find a Chemistry Community Like PF

bjon-07
May 3, 2004 · Replies 8 · May 7, 2004

Replies: 8

How to Prepare a Buffer Solution with a pH of 12.50 Using Given Reagents?

Erinyes83
Apr 28, 2004 · Replies 4 · May 6, 2004

Replies: 4

Comparing Calcium Carbonate in Shells: An Experiment

jan
May 2, 2004 · Replies 9 · May 6, 2004

Replies: 9

Creating First Life: A DIY Chemical Experiment

schordinger
May 4, 2004 · Replies 3 · May 4, 2004

Replies: 3

Chemical Formulas: Ba(OH)_2 vs BaO_2H_2; Al(NO_3)_3 vs AlN_3O_9

JasonRox
May 2, 2004 · Replies 1 · May 2, 2004

Replies: 1

The Impact of Humans on Carbon-14 Dating

poopflinger15
May 2, 2004 · Replies 1 · May 2, 2004

Replies: 1

How is the superacid CH5+ made?

bjon-07
Apr 30, 2004 · Replies 7 · May 1, 2004

Replies: 7

How Do You Calculate Molarity in Diluted Solutions?

nemzy
Apr 28, 2004 · Replies 1 · Apr 28, 2004

Replies: 1

How Is the Equilibrium Formula Derived?

Haftred
Apr 27, 2004 · Replies 3 · Apr 28, 2004

Replies: 3

What is the mysterious gas in the sealed flask of mercury?

kdb003
Apr 26, 2004 · Replies 1 · Apr 27, 2004

Replies: 1

Do wintergreen Life Savers actually make a spark?

ptex
Apr 26, 2004 · Replies 9 · Apr 27, 2004

Replies: 9

Effect of pH changes on UV absorbance

sven222
Apr 22, 2004 · Replies 3 · Apr 25, 2004

Replies: 3

What is the method for determining the oxidation number of transition elements?

osaka
Apr 11, 2004 · Replies 9 · Apr 23, 2004

Replies: 9

What Makes Materials Transparent at the Molecular Level?

exekil
Mar 21, 2004 · Replies 7 · Apr 21, 2004

Replies: 7

Understanding Acid Strength: HSO3- vs H2SO3

nemzy
Apr 18, 2004 · Replies 5 · Apr 20, 2004

Replies: 5

How Do You Plan Chemistry Experiments for Molar Enthalpy and Recrystallisation?

meawinner
Apr 19, 2004 · Replies 3 · Apr 20, 2004

Replies: 3

Find Ka, Kb & Verify Kw Relation

nemzy
Apr 18, 2004 · Replies 1 · Apr 19, 2004

Replies: 1

Some basic chemistry problems i have troube with

nemzy
Apr 15, 2004 · Replies 3 · Apr 15, 2004

Replies: 3

Water Purification: Harmful Chemicals & Possibilities

repugno
Apr 14, 2004 · Replies 2 · Apr 15, 2004

Replies: 2

Natural Vibration: Data on Materials

zg74
Apr 14, 2004 · Replies 1 · Apr 15, 2004

Replies: 1

Toxins and Poisons: Info & Resources

Thallium
Apr 12, 2004 · Replies 2 · Apr 13, 2004

Replies: 2

Identifying SN1, SN2, E1, and E2 Reactions in Organic Chemistry

phy
Apr 12, 2004 · Replies 6 · Apr 13, 2004

Replies: 6

Periodic table trend for the value of dipole moments

tiffany
Apr 12, 2004 · Replies 5 · Apr 12, 2004

Replies: 5

Arraging atoms/ions based on atomic radius

walker
Apr 5, 2004 · Replies 1 · Apr 12, 2004

Replies: 1

A very intersting periodic table.

RuiMonteiro
Apr 11, 2004 · Replies 1 · Apr 12, 2004

Replies: 1

How can I improve my understanding of chemistry for college and high school?

garytse86
Apr 11, 2004 · Replies 1 · Apr 11, 2004

Replies: 1

Oxidation number vs. ionic charges

jeanbean
Apr 11, 2004 · Replies 1 · Apr 11, 2004

Replies: 1

Phenol + FeCl3 Reaction: Distinguish 4-Methylbenzoic Acid

chiral
Apr 11, 2004 · Replies 2 · Apr 11, 2004

Replies: 2

Non-Conductive Liquid: Dissolving Salt & Water

Brad_Ad23
Apr 6, 2004 · Replies 2 · Apr 11, 2004

Replies: 2

Why Aren't There Examples of Redox Reactions with 3 Half Reactions in Textbooks?

fish
Apr 8, 2004 · Replies 1 · Apr 9, 2004

Replies: 1

How to Calculate Partial Pressures and Kp for Nitrogen Oxides Mixture?

poopflinger15
Apr 7, 2004 · Replies 3 · Apr 8, 2004

Replies: 3

Sugar-Free Sweetener: The Truth About Aspartame's Effects on Skin

deda
Mar 2, 2004 · Replies 4 · Apr 6, 2004

Replies: 4

I need to find K for the given conditions

gtfish
Apr 5, 2004 · Replies 2 · Apr 6, 2004

Replies: 2

Calculate NaHCO3 Molar Mass & Equilibrium Constants

gtfish
Apr 5, 2004 · Replies 1 · Apr 6, 2004

Replies: 1

Difference Between Aqueous Solution An Dliquid State?

Dr.Brain
Apr 1, 2004 · Replies 10 · Apr 5, 2004

Replies: 10

Is Bohr's Model Accurate for the Hydrogen Atom?

rumaithya
Apr 5, 2004 · Replies 3 · Apr 5, 2004

Replies: 3

Typing Up Molecules: Struggling with HgCl2

hecate
Apr 3, 2004 · Replies 3 · Apr 4, 2004

Replies: 3

Can You Help Me Understand Molecular Dipole Moments?

babbagee
Feb 10, 2004 · Replies 10 · Apr 3, 2004

Replies: 10

Understanding Nodal Surfaces: How Many are There in an Orbital?

walker
Apr 2, 2004 · Replies 1 · Apr 2, 2004

Replies: 1

Can a pendulum clock be used in an earth satellite

divyaushadam
Mar 31, 2004 · Replies 1 · Apr 1, 2004

Replies: 1

Can Chemical Energy Generation Compete with Nuclear Energy's Safety and Economy?

wunderkind
Mar 31, 2004 · Replies 5 · Mar 31, 2004

Replies: 5

Finding pH of an Acid with Added OH-: Ka and the Quadratic Equation

fish
Mar 3, 2004 · Replies 4 · Mar 31, 2004

Replies: 4

Acid/Oils: Bulk storage for collectibles

2112_Entanglement
Mar 31, 2004 · Replies 5 · Mar 31, 2004

Replies: 5

Is Ground Level Ozone the Same as Smog?

adeel
Mar 27, 2004 · Replies 1 · Mar 29, 2004

Replies: 1

sidebar

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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