Metric System:
Temperature and Heat

Temperature

• Temperature is a measure of kinetic (moving) energy in particles of matter

• It is measured with a thermometer

Unit

• The metric unit for temperature is Celsius (°C)

Water’s Freezing & Boiling Points

• Freezing point is 0°C (32°F)

• Boiling point is 100°C (212°F)

• It is easiest to use a thermometer’s scale for converting celsius to fahrenheit

Heat

• Heat is the energy transferred between matter as a result of differences in temperature.

• Heat flows from hot to cold.

Exothermic vs Endothermic

• Most reactions produce heat or cold

• Exothermic reactions increase motion and get hot (heat exits)

• Endothermic reactions reduce motion and get cold (heat enters)

Delta (∆) - a change

• A triangle (∆) symbolizes a change

• This change can be either an increase or decrease