chemical reactions the story. hi there. this is h 2 o. so is this. meet 2h 2 o

Chemical Reactions The story

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Chemical ReactionsThe story

Hi there.

This is H2O.So is this.

Meet 2H2O

They weren’t alwaysso happy.

Page 4: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Hmph.You’re out ofcontrol

Bbbllgghh!!

Page 5: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

You need me.

I’m important.

Meet O2

Page 6: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

He’s light.He’s fast.

He’s crazy!

Meet H2

B-b-b-b-b

Page 7: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

One day…Hey!Quit it!

Page 8: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

One day…

Chemical Reactions

Bonds are broken and new bonds are formed.

Bonds in H2 & O2 break.

Chemical Reactions

Bonds are broken and new bonds are formed.

New bonds form.

Page 11: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Chemical ReactionsNew substancesare formed.

2 gases react Water is formed

Page 12: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Parts of a ReactionReactants:The chemicals you have before the reaction

That’d be us.

Tbtbbhth! Tbtbbhth!

H2O2

Page 13: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Parts of a ReactionProducts:The substances created in the reaction

H2O H2O

Page 14: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Chemical EquationReactant

sProducts

Parts of a Reaction

Chemical Reactions

During chemical reactions atoms are not created or destroyed. They’re just

rearranged.

2 oxygen atoms4 hydrogen atoms

Page 16: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

How can you tellif a chemical reactionhas happened?

Let me give you some hints.

Page 17: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Is it a chemical reaction?

If a gas is producedit might be a chemical reaction.Look for the bubbles!

Page 18: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Is it a chemical reaction?

If it changes colorit might be a chemical reaction.Like iron rusting!

Page 19: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Is it a chemical reaction?

If it gets hotterit might be a chemical reaction.

Page 20: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Is it a chemical reaction?

Or…if it gets colderit might be a chemical reaction.

Page 21: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Exothermic ReactionsExothermic reactions release energy.These reactions feel hot.

Page 22: Chemical Reactions The story. Hi there. This is H 2 O. So is this. Meet 2H 2 O

Endothermic Reactions

Endothermic reactions absorb energy.These reactions feel cold.

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Chemical Equations. Like a recipe: ReactantsProducts 2H 2 (g) + O 2 (g) 2H 2 O(l) Introduction

Saclay / Photocatalysis and Biohydrogen5/3/2007 2H 2 O 2H 2 + O 2 2H 2 O O 2 + 4H + + 4e - 2H + + 2e - H 2 G°~ 5 eV (113 kcal/mol) Études photophysiques

Enzyme Activity Lab 13 AP Biology (Peroxidase + Hydrogen Peroxide → Complex → Peroxidase + Water + Oxygen) 2H 2 O 2 → 2H 2 O + O 2 (gas)

Enzyme Activity Lab 13 AP Biology (Peroxidase + Hydrogen Peroxide Complex Peroxidase + Water + Oxygen) 2H 2 O 2 2H 2 O + O 2 (gas)

Gas Stoichiometry!. Volume-Volume Coefficients give volume ratios of GASES in a balanced chemical equation For example: 2H 2 + O 2 2H 2 O means

Domino reactions of 2H-azirines with acylketenes from furan …...784 Domino reactions of 2H-azirines with acylketenes from furan-2,3-diones: Competition between the formation of ortho-fused

PEN NADPH M T P O I S P ES P - radio.cuci.udg.mx · FMN Fe--S FMNH 2 2H+ MITOCHONDRIAL MATRIX 2e - 4H+ 3H+ Cytoplasm Cytoplasmic Membrane 4H+ 2H + 1.6.5.3 NADH+H+ 2H+ 2H + ADP S Pi

Electrolysis of water 2H 2 O→2H 2 + O 2 We consider water cleared by distillation several times as a chemically clear material. Water can be separated

CATHODIC PROTECTION · CATHODIC PROTECCATHODIC PROTE CCCTIONTIONTION A summary of the above half reactions can be expressed as: 2Fe + 2H 2O + O 2 → 2Fe(OH) 2 The term Fe(OH) 2 is

REVISED Propose structure C 4 H 8 O 3 NMR 2.62 (t,2H) 3.38 (s, 3H) 3.68 (t,2H) 11.5 (s, 1H)

igcsestudybank.weebly.comigcsestudybank.weebly.com/.../biology-igcse-experiments.docx · Web viewBiology Exam - Paper 6 Revision Notes Enzyme activity lab: 2H 2 O 2 (l) → 2H 2 O

dV o S-28n-2H€¦ · saun-2H . Created Date: 9/19/2013 6:41:12 PM

Chemical Formulas and Equations Test Review H2OH2O2H 2 + O 2 2H 2 O

Chem 1151: Ch. 5 Chemical Reactions. The Chemical Equation 2H 2 (g) + O 2 (g) 2H 2 O( l ) Identifies reactant(s) and product(s) Identifies states

Reaction Types. A process that changes one or more substances into one or more new substances. O -2 H +1 O -2 H +1 2H 2 + O 2 2H 2 O

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Reversible Reactions Reactions are spontaneous if G is negative. If G is positive the reaction happens in the opposite direction. 2H 2 (g) + O 2 (g)

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Chapter a I to ChemICal reaCtIons - KaiserScience Chapter 4 An Introduction to Chemical Reactions ... equation describes the burning of hydrogen gas to form liquid water. 2H 2(g)

Lewis Acid Mediated Aza-Diels-Alder Reactions and ...9677/FULLTEXT01.pdf · Aza-Diels-Alder Reactions and Asymmetric Alkylations of 2H ... 5.3.1 X-Ray Structure of Aziridine 74

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chemical reactions the story. hi there. this is h 2 o. so is this. meet 2h 2 o

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