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States of Matter & Thermochemistry

Ch. 10 & 11. States of Matter & Thermochemistry. 10.1 Kinetic Theory. Kinetic theory of gases - valid only at extremely low density A gas is composed of particles, usually molecules or atoms Hard spheres Insignificant volume Far from each other

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Thermochemistry - concerned with heat changes that occur during chemical reactions

Thermochemistry - concerned with heat changes that occur during chemical reactions. Heat, q. energy that transfers from one object to another, because of a temperature difference between them Energy that flows from something warmer to something cooler. Learning Check.

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Heat Review

Heat Review. A. When you touch ice, heat is transferred from 1) your hand to the ice 2) the ice to your hand B. When you drink a hot cup of coffee, heat is transferred from 1) your mouth to the coffee 2) the coffee to your mouth. Heat Review.

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Chapter 6 Energy and States of Matter

Chapter 6 Energy and States of Matter. Measuring Heat Energy Energy and Nutrition. Heat. Energy that flows from something warm to something cooler A hotter substance gives KE to a cooler one

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Ch. 16: Energy and Chemical Change

Ch. 16: Energy and Chemical Change. 16.1 Energy. Objectives. Explain what energy is and distinguish between potential and kinetic energy. Relate chemical potential energy to the heat lost or gained in chemical reactions.

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Ch. 15: Energy and Chemical Change

Ch. 15: Energy and Chemical Change. 15.1 Energy. Objectives. Explain what energy is and distinguish between potential and kinetic energy. Relate chemical potential energy to the heat lost or gained in chemical reactions.

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Quiz, Sept 24:

Identify the following as physical or chemical property: porosity boiling point When acid spills on your skin, what is the first aid procedure? Convert 10.00 cal to Joules. Which state of matter has no definite shape, but has a definite volume?. physical property physical property

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Energy and Matter

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Energy

Energy. Energy is defined as having the ability to do work Energy allows objects to move and to change Walking, lifting, chemical reactions, etc. involve work Two kinds of energy: - Kinetic = energy of motion (e.g. climbing ladder) - Potential = stored energy (e.g. object at top of ladder)

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Unit: Thermochemistry

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Thermodynamics

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Non-Prefix Conversion Problems

Non-Prefix Conversion Problems. Non-Prefix Conversion Problems. Ex.(1) How many kilograms (to the nearest kg) is 143 lbs? (2.2 lbs = 1.0 kg) ____________ = ____________. X. 143 lbs. Cross multiply and then divide. 1.0 kg. 2.2 lbs. X. =. 65 kg.

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Determine the specific heat of the metal.

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