Temperature Conversions PDF

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Document Details

FaultlessPopArt

Uploaded by FaultlessPopArt

Kings' School Dubai

2017

Tags

temperature conversion thermodynamics science chemistry

Summary

This document is a lecture presentation on temperature conversions. It covers different temperature scales, formulas, and examples for converting between Fahrenheit, Celsius, and Kelvin. It includes examples using both Celsius and Fahrenheit temperature scales.

Full Transcript

Chapter 3 Lecture Basic Chemistry Fifth Edition, Global Edition Chapter 3 Matter and Energy 3.3 Temperature Learning Goal Given a temperature, calculate a corresponding temperature on another scale. © 2017 Pearson Educati...

Chapter 3 Lecture Basic Chemistry Fifth Edition, Global Edition Chapter 3 Matter and Energy 3.3 Temperature Learning Goal Given a temperature, calculate a corresponding temperature on another scale. © 2017 Pearson Education, Ltd. Chapter 3 Lecture Chapter 3 Matter and Energy 3.3 – Temperature Learning Objective Given a temperature, calculate a corresponding temperature on another scale. Success Criteria: I can: 1. calculate the corresponding temperature on another scale. 2. explain the formulas used for conversion. 3. practice problems for each type of conversion. © 2017 Pearson Education, Ltd. https://uaecabinet.ae/en/national-agenda © 2017 Pearson Education, Ltd. © 2017 Pearson Education, Ltd. © 2017 Pearson Education, Ltd. https://dashboard.blooket.com/my-sets © 2017 Pearson Education, Ltd. Temperature Temperature is a measure of how hot or cold an object is compared to another object. is measured using a thermometer. is measured and reported in Celsius (°C) units in science. © 2017 Pearson Education, Ltd. Temperature Scales Temperature scales are Fahrenheit, Celsius, and Kelvin. have reference points for the boiling and freezing points of water. © 2017 Pearson Education, Ltd. Temperature Scales What is the difference in the freezing points of water on the Celsius and Fahrenheit temperature scales? © 2017 Pearson Education, Ltd. Learning Check A. What is the temperature of freezing water? (1) 0 °F (2) 0 °C (3) 0 K B. What is the temperature of boiling water? (1) 100 °F (2) 32 °F (3) 373 K C. How many Celsius units are between the boiling and freezing points of water? (1) 100 (2) 180 (3) 273 © 2017 Pearson Education, Ltd. Solution A. What is the temperature of freezing water? (2) 0 °C B. What is the temperature of boiling water? (3) 373 K C. How many Celsius units are between the boiling and freezing points of water? (1) 100 © 2017 Pearson Education, Ltd. Temperature Scales © 2017 Pearson Education, Ltd. Temperature Scales © 2017 Pearson Education, Ltd. Converting Between °F to °C © 2017 Pearson Education, Ltd. Guide to Calculating Temperature © 2017 Pearson Education, Ltd. Converting Between °F to °C The typical temperature in a room is 21 °C. What is that temperature in degrees Fahrenheit? STEP 1 Given 21 °C Need °F STEP 2 Write a temperature equation. TF = 1.8TC + 32 © 2017 Pearson Education, Ltd. Converting Between °F to °C The typical temperature in a room is 21 °C. What is that temperature in degrees Fahrenheit? STEP 3 Substitute known values and calculate. TF = 1.8(21 °C) + 32 1.8 and 32 are exact = 38 + 32 = 70. °F © 2017 Pearson Education, Ltd. Kelvin Temperature Scale The Kelvin temperature scale adds 273 to the Celsius temperature. TK = TC + 273 is based on 0 K (absolute zero), the lowest possible temperature. 0 K = –273 °C © 2017 Pearson Education, Ltd. Temperature Comparisons © 2017 Pearson Education, Ltd. © 2017 Pearson Education, Ltd. © 2017 Pearson Education, Ltd. Chapter 3 Lecture Chapter 3 Matter and Energy 3.2 – Temperature Learning Objective Given a temperature, calculate a corresponding temperature on another scale. Success Criteria: I can: 1. calculate the corresponding temperature on another scale. 2. explain the formulas used for conversion. 3. practice problems for each type of conversion. © 2017 Pearson Education, Ltd. Learning Check In a type of cancer treatment called thermotherapy, temperatures as high as 113 °F are used to destroy cancer cells or make them more sensitive to radiation. What is that temperature in degrees Celsius? What is that temperature in degrees Celsius? TF = 1.8 (TC) + 32 TK = TC + 273 © 2017 Pearson Education, Ltd. Solution In a type of cancer treatment called thermotherapy, temperatures as high as 113 °F are used to destroy cancer cells or make them more sensitive to radiation. What is that temperature in degrees Celsius? STEP 1 Given 113 °F Need °C STEP 2 Write a temperature equation. © 2017 Pearson Education, Ltd. Solution In a type of cancer treatment called thermotherapy, temperatures as high as 113 °F are used to destroy cancer cells or make them more sensitive to radiation. What is that temperature in degrees Celsius? STEP 3 Substitute known values and calculate. © 2017 Pearson Education, Ltd. Learning Check What is normal body temperature, 37 °C, in kelvins? A. 236 K B. 310 K C. 342 K TF = 1.8 (TC) + 32 TK = TC + 273 © 2017 Pearson Education, Ltd. Solution What is normal body temperature, 37 °C, in kelvins? B. 310 K STEP 1 Given 37 °C Need K STEP 2 Write a temperature equation. TK = TC + 273 STEP 3 Substitute known values and calculate. TK = 37 + 273 = 310 K © 2017 Pearson Education, Ltd.

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