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DO YOU REMEMBER?

DO YOU REMEMBER?. 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 HOW FAST PARTICLES ARE MOVING (KINETIC ENERGY). CAN YOU FIGURE IT OUT?. Is it true that ____ not real?

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DO YOU REMEMBER?

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  1. DO YOU REMEMBER? • Temperature is the measure of how HOT or COLD something is. • Temperature is the measure of the particles KINETIC ENERGY.

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

  3. CAN YOU FIGURE IT OUT? • Is it true that ____ not real? • Loss of ____ is what I feel. • _____ will move you need to know. • _____ will flow from ____ to ____. cold’s heat Heat Heat high low Frío No Existe BrainPop Diffusion Video

  4. Do you know?

  5. Do you know?

  6. Explain

  7. Explain

  8. DIFFUSION AND HEAT • 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. • Diffusion causes solutes to dissolve without stirring. • Diffusion causes heat to travel from areas of high temperature to areas of low temperature. BrainPop Diffusion Video

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

  10. HEAT FLOW • Heat will only flow from an area of HIGH TEMP to an area of LOW TEMP HIGH TEMP LOW TEMP

  11. HEAT FLOW • Use these pieces to describe the following heat situations. HIGH TEMP HEAT FLOWS IN HEAT FLOWS OUT LOW TEMP

  12. SITUATION 1 • Put the juice box in the oven. 150°C HIGH TEMP HEAT FLOWS IN LOW TEMP 25°C

  13. SITUATION 2 • Put the frozen OJ in the oven. 150°C HIGH TEMP HEAT FLOWS IN LOW TEMP -5°C

  14. SITUATION 3 • Put the coffee in the oven. LOW TEMP 150°C HEAT FLOWS OUT 200°C HIGH TEMP

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

  16. LOW TEMP HEAT FLOW HEAT OUT HIGH TEMP LOW TEMP HEAT OUT HIGH TEMP

  17. HOW REFRIGERATORS WORK • A fridge absorbs the heat out of food and releases it out the back. • Refrigerators use the Combined Gas Law to create lower temperatures. • Increase the volume, the pressure will decrease and the temperature will decrease also. Combined V T P

  18. SITUATION 4 • Put the juice box in the fridge. HEAT FLOWS OUT HIGH TEMP 25°C LOW TEMP 5°C

  19. SITUATION 6 • Put the frozen OJ in the fridge. LOW TEMP HEAT FLOWS IN -5°C HIGH TEMP 5°C

  20. SITUATION 5 • Put the coffee in the fridge. HEAT FLOWS OUT HIGH TEMP 200°C LOW TEMP 5°C

  21. HEAT FLOW ENDO = IN EXO = OUT RELEASE ABSORB Candy Video

  22. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 BOILING POINT VAPORIZATION Temperature (°C) MELTING POINT MELTING ENDOTHERMIC 0 1 2 3 4 5 6 7 8 9 10 Heat (J) Thermochemistry Video

  23. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 CONDENSING POINT CONDENSATION Temperature (°C) FREEZING POINT FREEZING EXOTHERMIC 0 1 2 3 4 5 6 7 8 9 10 Heat (J)

  24. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 VAPOR ENDOTHERMIC VAPORIZATION BOILING POINT CONDENSATION Temperature (°C) LIQUID MELTING EXOTHERMIC MELTING POINT FREEZING SOLID Heat Added (kJ)

  25. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 VAPOR ENDOTHERMIC VAPORIZATION BOILING POINT CONDENSATION Temperature (°C) LIQUID MELTING EXOTHERMIC MELTING POINT FREEZING SOLID Heat Added (kJ) States of Water Video

  26. Did You Learn It? • What does EXOTHERMIC mean?A. EXO means inB. EXO means out

  27. Did You Learn It? • When a liquid turns into a solid, it is called…A. freezingB. condensationC. vaporizationD. melting ?

  28. Did You Learn It? • During freezing...1. Energy is absorbed2. Energy is released ? ABSORB RELEASE

  29. FREEZING (FUSION) • Going from a liquid to a solid is called freezing, or fusion. • The particles release (lose) energy. • Releasing energy causes particles to slow down. RELEASE ENERGY

  30. Did You Learn It? • What does ENDOTHERMIC mean?A. ENDO means outB. ENDO means in

  31. Did You Learn It? • When a liquid turns into a gas, it is called…A. freezingB. condensationC. vaporizationD. melting ?

  32. Did You Learn It? • During vaporization...1. Energy is absorbed2. Energy is released ? ABSORB RELEASE

  33. BOILING (VAPORIZATION) • Going from a liquid to a gas is called boiling or vaporization. • The particles absorb (gain) energy. • Absorbing energy causes particles to speed up. ABSORB ENERGY

  34. Did You Learn It? • When a solid turns into a liquid, it is called…A. freezingB. condensationC. vaporizationD. melting ?

  35. Did You Learn It? • During melting...1. Energy is absorbed2. Energy is released ? ABSORB RELEASE

  36. MELTING • Going from a solid to a liquid is called melting. • The particles absorb (gain) energy. • Absorbing energy causes particles to speed up. ABSORB ENERGY

  37. Did You Learn It? • When a vapor turns into a liquid, it is called…A. freezingB. condensationC. vaporizationD. melting ?

  38. Did You Learn It? • During condensation...1. Energy is absorbed2. Energy is released ? ABSORB RELEASE

  39. CONDENSATION • Going from a gas to a liquid is called condensing. • The particles release(lose) energy. • Releasing energy causes particles to slow down. RELEASE ENERGY

  40. Did You Learn It? • When a solid turns into a vapor, it is called…A. vaporizationB. condensationC. sublimationD. melting ?

  41. Did You Learn It? • During sublimation...1. Energy is absorbed2. Energy is released ? ABSORB RELEASE

  42. SUBLIMATION • Going from a solid to a gas is called sublimation. • The particles absorb (gain) energy. • Absorbing energy causes particles to speed up. ABSORB ENERGY

  43. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 VAPOR ENDOTHERMIC VAPORIZATION BOILING POINT SUBLIMATION CONDENSATION Temperature (°C) LIQUID MELTING EXOTHERMIC MELTING POINT FREEZING SOLID Heat Added (kJ)

  44. Did You Learn It? • As ice melts or freezes, the temperature does not change. • TRUE, the energyis used to breakthe bonds.

  45. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 No Temp Change Bond Breaking Temperature (°C) No Temp Change Bond Forming MELTING FREEZING Heat Added (kJ)

  46. Did You Learn It? • As water vaporizes or condenses, the temperature increases. • FALSE, the energyis used to breakbonds, so the tempdoesn’t change.

  47. Temperature Curve of Water 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 -10 -20 -30 -40 VAPORIZATION No Temp Change Bond Breaking CONDENSATION Temperature (°C) No Temp Change Bond Forming MELTING MELTING FREEZING FREEZING Heat Added (kJ)

  48. ENDOTHERMIC REACTION • Energy is absorbedby reaction • HEATis a reactant (left side) • NH4NO3 + H2O + HEAT NH4+ + NO3- HIGH TEMP LOW TEMP HEAT FLOW Thermochemistry Video

  49. Energy Diagram Potential Energy product reactant ENDOTHERMIC Reaction Progress ABSORB RELEASE

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