Thermochem #1

Device that accurately measures energy changes during a chemical process.

• thermometer
• calorimeter
• barometer
• anemometer

Tags

NGSS.HS-PS1-4

A process that releases heat to its surroundings

• endothermic
• exothermic
• radiation
• heat transfer

Tags

NGSS.HS-PS1-4

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

• 12.82 °C
• 24.12°C
• 351 °C

124 joules of heat are added to a piece of lead (specific heat = 0.128 J/g^oC). It is heated to 100.0^oC, and then lowered into a calorimeter filled with water.  The lead’s temperature decreases to 28.8^oC.  What is the mass?

• 150 g
• 13.6 g 
• 4 g
• 1130 g

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4

What is the specific heat capacity of silver metal if 55 grams of the metal absorbs 47.3 joules of heat and the temperature rises 15 degrees Celcius?

• 0.033 J/gC
• 0.057 J/gC
• 39000 J/gC
• .0455 J/gC

Endothermic reactions feel

• warm
• cold

Tags

NGSS.HS-PS1-4

Exothermic reactions feel

• warm
• cold

Tags

NGSS.HS-PS1-4

Heat flows from _______ to ______ objects

• cooler to warmer
• warmer to warmer
• warmer to cooler
• cooler to cooler

Tags

NGSS.HS-PS3-4

Heat is measured in 

• joules
• grams
• degrees celcius

q stands for which variable

• heat
• mass
• specific heat
• change in temperature

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-4