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Thermodynamics: Enthalpy & Entropy

Thermodynamics: Enthalpy & Entropy. Thermodynamics. thermo = heat (energy) dynamics = movement, motion. Some thermodynamic terms chemists use:. System: the portion of the universe that we are considering open system: energy & matter can transfer closed system: energy transfers only

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7. Energy and Food chapter 8

7. Energy and Food chapter 8. Energy = the ability to do work. A calorie is the amount of heat (or energy) needed to raise the temperature of one gram of water by one degree Celsius. A kilocalorie (kcal) is 1000 calories. A joule is 0.24 calories.

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7. Energy and Food chapter 8

7. Energy and Food chapter 8. Energy = the ability to do work. A calorie is the amount of heat (or energy) needed to raise the temperature of one gram of water by one degree Celsius. A kilocalorie (kcal) is 1000 calories. A joule is 0.24 calories.

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Chapter 5

Chapter 5. TEMPERATURE AND HEAT Dr. Babar Ali. CHAPTER OUTLINE. TEMPERATURE. Temperature is a measure of how hot or cold a substance is. Thermometer is an instrument used for measuring temperature, and is based on thermometric properties of matter.

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Chapter 1

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Liquids and Solids

Liquids and Solids. H 2 O (g). H 2 O (s). H 2 O ( ? ). The Three States of Matter. Heat & Changes of State. Heat & Changes of State. sublimation. sublimation. boiling. melting. vaporization. condensation. freezing. deposition. Heat & Changes of State.

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Liquids and Solids

Liquids and Solids. H 2 O (g). H 2 O (s). H 2 O ( ? ). The Three States of Matter. Heat & Changes of State. Heat & Changes of State. sublimation. sublimation. boiling. melting. vaporization. condensation. freezing. deposition. Heat & Changes of State.

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Energy And States of Matter

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Specific Heat

Specific Heat. Different substances have different abilities to store energy. They are said to have different heat capacities. Heat capacity is defined as the amount of heat required to change the temperature of the substance by one degree Celsius (or Kelvin).

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Heat Review Game!

Heat Review Game!. Rules: Every turn the white board and marker MUST be passed to the next team member. You may help your team members but only the person who’s turn it is may use the marker. You must show your work! (when appropriate)

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Heat

2. Heat. Calories. Temperature. Celsius. Thermometer. Specific Heat. Fahrenheit. Absolute Zero. Temperature. Temperature is a measure of how hot or cold an object is. Ice Water. 0 o C. 32 o F. 273 o K. 212 o F. 373 o K. Boiling Water. 100 o C. 310 o K. 37 o C. 99 o F.

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Chapter 11 Energy in Thermal Processes

Chapter 11 Energy in Thermal Processes. next chapter. Vocabulary, 3 Kinds of Energy. Internal Energy U = Energy of microscopic motion and inter-molucular forces Work W = -F D x = -P D V is work done by expansion (next chapter) Heat Q = Energy transfer from microscopic contact. Mass.

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PHYSICS 231 Lecture 27: Heat & Heat exchange

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PHYSICS 231 Lecture 27: Heat & Heat exchange

PHYSICS 231 Lecture 27: Heat & Heat exchange. Remco Zegers Walk-in hour: Thursday 11:30-13:30 am Helproom. Problems in the book for extra practice. 8: 39, 41, 47, 51 9: 5, 13, 19, 26, 27, 40, 43, 55 10: 9, 13, 29, 31, 37, 42 11: 1,4,13,21,33. Internal energy.

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Energy (nrg)

Energy (nrg). How energy changes the physical state of matter & energy involved in chemical D. Energy. Energy is measured in CALORIES and JOULES Calories(cal) The amount of nrg required to raise 1.0 gram of water 1.0 o C Kilocalories are often used, 1000cal = 1.0 kcal

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SCIENTIFIC NOTATION Uses exponential notation & places a decimal after the 1 st sig fig.

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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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Changes in State

Changes in State. warm solid. warm gas. warm liquid. Temperature ->. Time ->. Warming Curve. boiling. melting. warm gas. Temperature ->. warm liquid. warm solid. Time ->. Within One State.

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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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Energy and the Phase Change of Water

46. Energy and the Phase Change of Water. Conceptual Physics Text Correlation: Section 23.8. On the graph, why is the slope of the curve for ice steeper than the slope for water and steam?.

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