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Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com DO YOU REMEMBER? Temperature is the measure of how HOT or COLD something is.Temperature.

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Presentation on theme: "Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com DO YOU REMEMBER? Temperature is the measure of how HOT or COLD something is.Temperature."— Presentation transcript:

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2 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com DO YOU REMEMBER? Temperature is the measure of how HOT or COLD something is.Temperature is the measure of how HOT or COLD something is. Temperature is the measure of the particles KINETIC ENERGY.Temperature is the measure of the particles KINETIC ENERGY. Temperature is the measure of how HOT or COLD something is.Temperature is the measure of how HOT or COLD something is. Temperature is the measure of the particles KINETIC ENERGY.Temperature is the measure of the particles KINETIC ENERGY.

3 TEMPERATURE IS THE MEASURE OF HOW FAST PARTICLES ARE MOVING (KINETIC ENERGY)

4 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com CAN YOU FIGURE IT OUT? Is it true that ____ not real?Is it true that ____ not real? Loss of ____ is what I feel.Loss of ____ is what I feel. _____ will move you need to know._____ will move you need to know. _____ will flow from ____ to ____._____ will flow from ____ to ____. Is it true that ____ not real?Is it true that ____ not real? Loss of ____ is what I feel.Loss of ____ is what I feel. _____ will move you need to know._____ will move you need to know. _____ will flow from ____ to ____._____ will flow from ____ to ____. BrainPop Diffusion Videocold’s heat Heat low Heathigh Frío No Existe

5 Do you know?

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8 Explain

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10 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com DIFFUSION AND HEAT Diffusion is the random motion that causes particles to spread out.Diffusion is the random motion that causes particles to spread out. A difference of high to low is called a gradient, when it’s balanced it’s called equilibrium.A difference of high to low is called a gradient, when it’s balanced it’s called equilibrium. Diffusion causes solutes to dissolve without stirring.Diffusion causes solutes to dissolve without stirring. Diffusion causes heat to travel from areas of high temperature to areas of low temperature.Diffusion causes heat to travel from areas of high temperature to areas of low temperature. Diffusion is the random motion that causes particles to spread out.Diffusion is the random motion that causes particles to spread out. A difference of high to low is called a gradient, when it’s balanced it’s called equilibrium.A difference of high to low is called a gradient, when it’s balanced it’s called equilibrium. Diffusion causes solutes to dissolve without stirring.Diffusion causes solutes to dissolve without stirring. Diffusion causes heat to travel from areas of high temperature to areas of low temperature.Diffusion causes heat to travel from areas of high temperature to areas of low temperature. BrainPop Diffusion Video

11 HEAT WILL FLOW… FROM HIGH TO LOW Thermochemistry Video IS IT TRUE THAT COLD’S NOT REAL? LOSS OF HEAT IS WHAT I FEEL HEAT WILL MOVE YOU NEED TO KNOW

12 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com HEAT FLOW Heat will only flow from an area of HIGH TEMP to an area of LOW TEMPHeat will only flow from an area of HIGH TEMP to an area of LOW TEMP HIGH TEMP LOW TEMP

13 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com HEAT FLOW Use these pieces to describe the following heat situations. HIGH TEMP LOW TEMP HEAT FLOWS IN HEAT FLOWS OUT

14 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 150°C SITUATION 1 Put the juice box in the oven. HIGH TEMP 25°C LOW TEMP HEAT FLOWS IN

15 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 150°C SITUATION 2 Put the frozen OJ in the oven. HIGH TEMP -5°C LOW TEMP HEAT FLOWS IN

16 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 150°C SITUATION 3 Put the coffee in the oven. 200°C LOW TEMP HEAT FLOWS OUT HIGH TEMP

17 DO YOU ALREADY KNOW? How does a refrigerator work to keep food cold? How does a refrigerator work to keep food cold? Which gas law do fridges use? Which gas law do fridges use? Play Fridge VideoPlay Miele Fridge Video

18 HEAT FLOW LOW TEMP HIGH TEMP HEAT OUT HIGH TEMP LOW TEMP HEAT OUT

19 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com HOW REFRIGERATORS WORK A fridge absorbs the heat out of food and releases it out the back.A fridge absorbs the heat out of food and releases it out the back. Refrigerators use the Combined Gas Law to create lower temperatures.Refrigerators use the Combined Gas Law to create lower temperatures. Increase the volume, the pressure will decrease and the temperature will decrease also.Increase the volume, the pressure will decrease and the temperature will decrease also. A fridge absorbs the heat out of food and releases it out the back.A fridge absorbs the heat out of food and releases it out the back. Refrigerators use the Combined Gas Law to create lower temperatures.Refrigerators use the Combined Gas Law to create lower temperatures. Increase the volume, the pressure will decrease and the temperature will decrease also.Increase the volume, the pressure will decrease and the temperature will decrease also. T Combined P

20 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 5°C5°C SITUATION 4 Put the juice box in the fridge. 25°C LOW TEMP HEAT FLOWS OUT HIGH TEMP

21 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 5°C5°C SITUATION 6 Put the frozen OJ in the fridge. -5°C LOW TEMP HIGH TEMP HEAT FLOWS IN

22 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com 5°C5°C SITUATION 5 Put the coffee in the fridge. 200°C LOW TEMP HEAT FLOWS OUT HIGH TEMP

23 Candy Video HEAT FLOW ENDO = IN EXO = OUT RELEASE ABSORB

24 Temperature Curve of Water Heat (J) Temperature (°C) MELTING VAPORIZATION ENDOTHERMIC MELTING POINT BOILING POINT Thermochemistry Video

25 Temperature Curve of Water Heat (J) Temperature (°C) FREEZING CONDENSATION EXOTHERMIC FREEZING POINT CONDENSING POINT

26 Temperature Curve of Water Heat Added (kJ) Temperature (°C) ENDOTHERMIC EXOTHERMIC MELTING POINT BOILING POINT LIQUID VAPOR SOLID MELTING VAPORIZATION CONDENSATION FREEZING

27 Temperature Curve of Water Heat Added (kJ) Temperature (°C) ENDOTHERMIC EXOTHERMIC MELTING POINT BOILING POINT LIQUID VAPOR SOLID MELTING VAPORIZATION CONDENSATION FREEZING States of Water Video

28 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? What does EXOTHERMIC mean? A. EXO means in B. EXO means out

29 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? When a liquid turns into a solid, it is called… A. freezing B. condensation C. vaporization D. melting ??

30 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? During freezing Energy is absorbed 2. Energy is released ?? ABSORBABSORBRELEASERELEASE

31 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com FREEZING (FUSION) Going from a liquid to a solid is called freezing, or fusion.Going from a liquid to a solid is called freezing, or fusion. The particles release (lose) energy.The particles release (lose) energy. Releasing energy causes particles to slow down.Releasing energy causes particles to slow down. Going from a liquid to a solid is called freezing, or fusion.Going from a liquid to a solid is called freezing, or fusion. The particles release (lose) energy.The particles release (lose) energy. Releasing energy causes particles to slow down.Releasing energy causes particles to slow down. RELEASE ENERGY RELEASE ENERGY

32 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? What does ENDOTHERMIC mean? A. ENDO means out B. ENDO means in

33 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? When a liquid turns into a gas, it is called… A. freezing B. condensation C. vaporization D. melting ??

34 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? During vaporization Energy is absorbed 2. Energy is released ?? ABSORBABSORBRELEASERELEASE

35 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com BOILING (VAPORIZATION) Going from a liquid to a gas is called boiling or vaporization.Going from a liquid to a gas is called boiling or vaporization. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. Going from a liquid to a gas is called boiling or vaporization.Going from a liquid to a gas is called boiling or vaporization. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. ABSORBENERGYABSORBENERGY

36 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? When a solid turns into a liquid, it is called… A. freezing B. condensation C. vaporization D. melting ??

37 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? During melting Energy is absorbed 2. Energy is released ?? ABSORBABSORBRELEASERELEASE

38 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com MELTING Going from a solid to a liquid is called melting.Going from a solid to a liquid is called melting. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. Going from a solid to a liquid is called melting.Going from a solid to a liquid is called melting. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. ABSORBENERGYABSORBENERGY

39 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? When a vapor turns into a liquid, it is called… A. freezing B. condensation C. vaporization D. melting ??

40 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? During condensation Energy is absorbed 2. Energy is released ?? ABSORBABSORBRELEASERELEASE

41 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com CONDENSATION Going from a gas to a liquid is called condensing.Going from a gas to a liquid is called condensing. The particles release (lose) energy.The particles release (lose) energy. Releasing energy causes particles to slow down.Releasing energy causes particles to slow down. Going from a gas to a liquid is called condensing.Going from a gas to a liquid is called condensing. The particles release (lose) energy.The particles release (lose) energy. Releasing energy causes particles to slow down.Releasing energy causes particles to slow down. RELEASE ENERGY RELEASE ENERGY

42 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? When a solid turns into a vapor, it is called… A. vaporization B. condensation C. sublimation D. melting ??

43 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? During sublimation Energy is absorbed 2. Energy is released ?? ABSORBABSORBRELEASERELEASE

44 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com SUBLIMATION Going from a solid to a gas is called sublimation.Going from a solid to a gas is called sublimation. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. Going from a solid to a gas is called sublimation.Going from a solid to a gas is called sublimation. The particles absorb (gain) energy.The particles absorb (gain) energy. Absorbing energy causes particles to speed up.Absorbing energy causes particles to speed up. ABSORBENERGYABSORBENERGY

45 Temperature Curve of Water Heat Added (kJ) Temperature (°C) ENDOTHERMIC EXOTHERMIC MELTING POINT BOILING POINT LIQUID VAPOR SOLID MELTING VAPORIZATION CONDENSATION FREEZING SUBLIMATION

46 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? As ice melts or freezes, the temperature does not change.As ice melts or freezes, the temperature does not change. TRUE, the energy is used to break the bonds.TRUE, the energy is used to break the bonds. As ice melts or freezes, the temperature does not change.As ice melts or freezes, the temperature does not change. TRUE, the energy is used to break the bonds.TRUE, the energy is used to break the bonds.

47 Temperature Curve of Water Heat Added (kJ) Temperature (°C) No Temp Change Bond Breaking MELTING FREEZING No Temp Change Bond Forming

48 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com Did You Learn It? As water vaporizes or condenses, the temperature increases.As water vaporizes or condenses, the temperature increases. FALSE, the energy is used to break bonds, so the temp doesn’t change.FALSE, the energy is used to break bonds, so the temp doesn’t change. As water vaporizes or condenses, the temperature increases.As water vaporizes or condenses, the temperature increases. FALSE, the energy is used to break bonds, so the temp doesn’t change.FALSE, the energy is used to break bonds, so the temp doesn’t change.

49 Temperature Curve of Water Heat Added (kJ) Temperature (°C) VAPORIZATION CONDENSATION MELTING FREEZING No Temp Change Bond Breaking No Temp Change Bond Forming MELTING FREEZING

50 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com ENDOTHERMIC REACTION Energy is absorbed by reactionEnergy is absorbed by reaction HEAT is a reactant (left side)HEAT is a reactant (left side) NH 4 NO 3 + H 2 O + HEAT  NH NO 3 -NH 4 NO 3 + H 2 O + HEAT  NH NO 3 - Energy is absorbed by reactionEnergy is absorbed by reaction HEAT is a reactant (left side)HEAT is a reactant (left side) NH 4 NO 3 + H 2 O + HEAT  NH NO 3 -NH 4 NO 3 + H 2 O + HEAT  NH NO 3 - LOW TEMP HIGH TEMP HEAT FLOW Thermochemistry Video

51 Energy Diagram Reaction Progress Potential Energy reactant product ENDOTHERMIC ABSORBABSORBRELEASERELEASE

52 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com EXOTHERMIC REACTIONS Energy is released by reactionEnergy is released by reaction HEAT is a product (right side)HEAT is a product (right side) NaClO 3  NaCl + O 2 + HEATNaClO 3  NaCl + O 2 + HEAT Energy is released by reactionEnergy is released by reaction HEAT is a product (right side)HEAT is a product (right side) NaClO 3  NaCl + O 2 + HEATNaClO 3  NaCl + O 2 + HEAT Play Gummi Bear Video Play Flaming Gummi Bear Video LOW TEMP HIGH TEMP HEAT FLOW Thermochemistry Video

53 Energy Diagram Reaction Progress Potential Energy reactant product EXOTHERMIC ABSORBABSORBRELEASERELEASE

54 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com ENERGY GRAPHS The products in an endothermic reactions have higher energy because energy was absorbed.The products in an endothermic reactions have higher energy because energy was absorbed. Heat is a reactant (left side) in endothermic reactions.Heat is a reactant (left side) in endothermic reactions. The products in an exothermic reaction have a lower energy because energy was released.The products in an exothermic reaction have a lower energy because energy was released. Heat is a product (right side) in exothermic reactions.Heat is a product (right side) in exothermic reactions. The products in an endothermic reactions have higher energy because energy was absorbed.The products in an endothermic reactions have higher energy because energy was absorbed. Heat is a reactant (left side) in endothermic reactions.Heat is a reactant (left side) in endothermic reactions. The products in an exothermic reaction have a lower energy because energy was released.The products in an exothermic reaction have a lower energy because energy was released. Heat is a product (right side) in exothermic reactions.Heat is a product (right side) in exothermic reactions. How a Catalyst WorksThermochemistry Video

55 Energy Diagram Reaction Progress Potential Energy reactant product EXOTHERMIC Can I speed up the reaction? Add a Catalyst Lowers Activation Energy

56 Energy Diagram Reaction Progress Potential Energy reactant product ENDOTHERMIC Can I speed up the reaction? Add a Catalyst Lowers Activation Energy

57 Copyright 2011 CreativeChemistryLessons.comCreativeChemistryLessons.com CATALYSTS You can speed up a reaction by adding a catalyst.You can speed up a reaction by adding a catalyst. Catalysts lowers the activation energy (energy to get the reaction started).Catalysts lowers the activation energy (energy to get the reaction started). Your body uses catalysts called enzymes to break down food faster.Your body uses catalysts called enzymes to break down food faster. Catalysts are written above the arrow in a reaction.Catalysts are written above the arrow in a reaction. You can speed up a reaction by adding a catalyst.You can speed up a reaction by adding a catalyst. Catalysts lowers the activation energy (energy to get the reaction started).Catalysts lowers the activation energy (energy to get the reaction started). Your body uses catalysts called enzymes to break down food faster.Your body uses catalysts called enzymes to break down food faster. Catalysts are written above the arrow in a reaction.Catalysts are written above the arrow in a reaction. How a Catalyst Works Hydrogen Peroxide & Yeast


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