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State Changes

State Changes

State Changes. Heat of Fusion Heat energy required to convert a solid at its melting point to a liquid Value for water: 333 J/g Heat of Vaporization Heat energy required to convert a liquid at its boiling point to a solid Value for water: 2260 J/g. Vaporization

By alamea
(134 views)

Ch. 9: Chemical Bonding I: Lewis Theory (cont’d)

Ch. 9: Chemical Bonding I: Lewis Theory (cont’d)

Ch. 9: Chemical Bonding I: Lewis Theory (cont’d). Dr. Namphol Sinkaset Chem 200: General Chemistry I. I. Chapter Outline. Introduction Energy of Ionic Bond Formation Energy of Covalent Bond Formation. I. Energies of Bond Formation.

By baylee
(150 views)

Bond & Group Enthalpies

Bond & Group Enthalpies

Bond & Group Enthalpies. The standard entahlpy change associated with breaking the bond in a diatomic molecule in the gas phase: N  N (g) -------> 2 N (g) D H [N  N] = + 946 kJ / mole of N  N bonds

By zev
(110 views)

Application of exothermic reactions to make a hand warmer

Application of exothermic reactions to make a hand warmer

Application of exothermic reactions to make a hand warmer. By Ansam Anas Agarib. If you would like to make a hand warmer, what are the chemicals that you would use?. Calcium oxide-slaking lime Calcium carbonate CaCO 3 )- slaking lime Calcium chloride

By linh
(197 views)

Living Things!

Living Things!

Living Things!. Factors that affect living things are: Biotic factors – things that are alive or were alive (other organisms) Abiotic factors – things that are non-living (temperature, water etc.) The interaction of all biotic and abiotic factors creates an ecosystem. Ecology.

By teva
(115 views)

Thermochem HW 1

Thermochem HW 1

Thermochem HW 1. Separate by exothermic and Endothermic. Melting Freezing Vaporization Condensation Sublimation Deposition. Explain. Explain why you grouped the phase changes the way you did. Base your explanations around molecular motion. Draw and explain.

By javan
(90 views)

Periodic Properties

Periodic Properties

Periodic Properties. Periodic Trends. Don’t Confuse a trend with the explanation for that trend!!!!!. Example- Why is Br atom larger than a Kr atom????? Why is a cation smaller than its parent atom? Why is an anion larger than its parent atom??. Ionization energy.

By danno
(62 views)

1. During the phase change from solid to liquid, the temperature of the sample a)	increases

1. During the phase change from solid to liquid, the temperature of the sample a) increases

1. During the phase change from solid to liquid, the temperature of the sample a) increases b) decreases c) doubles d) halves e) does not change. a) increases. 2. The process of melting the solid sample is an ________________ process. a) endothermic b) exothermic

By inara
(90 views)

Energetics

Energetics

Energetics. IB Topics 5 & 15 PART 3: Energy Cycles. STANDARD ENTHALPY CHANGE OF FORMATION, . Definition: the enthalpy change when one mole of the compound is formed from its elements in their standard states at 298 K and 1 atm of pressure.

By gabby
(198 views)

Energy Transformations

Energy Transformations

Energy Transformations. Thermochemistry is the study of energy changes that occur during chemical reactions and changes in state. . The energy stored in the chemical bonds of a substance is called chemical potential energy . . Energy Transformations.

By yamin
(169 views)

Strawberry Wine

Strawberry Wine

Strawberry Wine.

By anika
(94 views)

ENVIRONMENTAL CONTROL & LIFE SUPPORT SYSTEMS

ENVIRONMENTAL CONTROL & LIFE SUPPORT SYSTEMS

Atmospheric Control of Closed Systems. M. TECH. SEMINAR CHE 702. ENVIRONMENTAL CONTROL & LIFE SUPPORT SYSTEMS. PRESENTED BY: SANJAY KATHERIA 11102036. ECLSS. AIR REVITALAIZATION. ECLSS. AIR REVITALIZATION. WASTE WATER MANAGEMENT. ECLSS. SOLID WASTE MANAGEMENT.

By zubeda
(207 views)

Solutions

Solutions

Solutions. “If you’re not part of the solution, you’re a part of the precipitate.” -Stephen Wright. Solutions, Colloids, and Suspensions. _______________ are homogeneous mixtures with particles large enough so they are visible to the naked eye. Examples: __________________.

By quincy
(141 views)

Endothermic vs. Exothermic Reactions:

Endothermic vs. Exothermic Reactions:

Endothermic vs. Exothermic Reactions:. By: Crystal & Caitlin! :D . Endothermic:. Exothermic:. An Exothermic reaction is the combustion of Acetone peroxide . . The Definitions. Exothermic- the word describes a process that releases energy in the form of heat.

By debbie
(591 views)

C7 Further Chemistry

C7 Further Chemistry

C7 Further Chemistry. Alcohols, carboxylic acids and esters Energy changes in Chemistry Reversible reactions and equilibria Analysis Green Chemistry. Alcohols, carboxylic acids and esters. Organic molecules and functional groups. Organic chemistry is the study of carbon-based compounds.

By donny
(146 views)

Chapter 10

Chapter 10

Chapter 10. Thermodynamics. section 1. What is Energy?. energy (def)- the capacity of an object to do work or produce heat Ch. 10 is concerned with 2 types of energy: kinetic and potential. potential. kinetic. kinetic energy (def)- energy due to the motion of an object.

By quiana
(124 views)

Chapter 7: Hot & Cold Packs

Chapter 7: Hot & Cold Packs

Chapter 7: Hot & Cold Packs. Introductory Activity. How many things can you think of in everday life that either give off heat or absorb heat? Which of these things are physical processes? Which are chemical processes?. Hot & Cold Packs.

By niel
(206 views)

Acids and Bases

Acids and Bases

Acids and Bases. Chapter 16. A special solution. Acids and bases are ALWAYS in a water solution. Your body has water in it so they are always dangerous to living things. Bases are just as dangerous as acids. In low concentrations they are not that dangerous and found all over your house.

By selima
(56 views)

Thermochemistry

Thermochemistry

Thermochemistry. Chapter 17. 17.1. The Flow of Energy—Heat and Work. The temperature of lava from a volcano ranges from 550°C to 1400°C. As lava flows, it loses heat and begins to cool. You will learn about heat flow and why some substances cool down or heat up more quickly than others. 17.1.

By levi
(160 views)

Enthalpy changes from D Hf

Enthalpy changes from D Hf

Enthalpy changes from D Hf. L.O.: Use enthalpy changes of formations to calculate an enthalpy change of a reaction indirectly. . Enthalpy of reaction from enthalpies of formation.

By yamal
(119 views)

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