Download presentation

Presentation is loading. Please wait.

Published byAllison Wentworth Modified over 4 years ago

1
Temperature å The temperature of an object determines the direction of heat transfer. u The average speed of the molecules åheat is transferred from object of high temp. to the object at low temp.

2
The TWO temp. scales Celsius (° C) Freezing point of water is __________ Boiling point of water is __________ Freezing point of water is at __________ Boiling point of water is ____________ Absolute Zero - point at which there is NO molecular movement Equal to 0 K or -273°C Kelvin (K) 0° C 100°C 273.15 K 373.15 K

3
How to convert K = °C + 273 or °C = K - 273 Remember: Kelvin does not have negative temperatures

4
Sample problems 1. Please convert the following: 5 cm = ? m 10 g = ? kg 525 mg = ? G 2. What is the temperature -25°C expressed in Kelvins? 3. A copper penny has a mass of 3.1 g and a volume of 0.35 cm 3. What is the density of copper?

5
Specific Gravity Specific gravity is a comparison of the density of a substance with the density of of a reference substance, usually at the same temperature. There are no units for specific gravity Specific gravity = density of material density of water at the same temp

6
Specific Gravity If the density of a substance is 6.2g/cm 3 at a particular temp. and the density of water at the same temp. is 0.86g/cm 3, what is the specific gravity of the substance at that temperature?

Similar presentations

OK

NOTES-Chapter 12 Thermal Energy. Heat is defined and expressed by the Kinetic Molecular Theory of heat.

NOTES-Chapter 12 Thermal Energy. Heat is defined and expressed by the Kinetic Molecular Theory of heat.

© 2018 SlidePlayer.com Inc.

All rights reserved.

To make this website work, we log user data and share it with processors. To use this website, you must agree to our Privacy Policy, including cookie policy.

Ads by Google