Thermochemistry

What is the symbol for heat?

• q
• H
• J
• ∘C

What is the study of heat changes that accompany chemical reactions and phase changes?

• energy

• chemistry

• work

• thermochemistry

Tags

NGSS.HS-PS3-4

NGSS.HS-PS1-4

What is the formula for calculating heat?

• q = mcΔT

• H = ΔH x moles

• H = ΔH x grams

• products - reactants

What are the two main types of energy?

• endothermic and exothermic

• spontaneous and nonspontaneous

• potential and kinetic

• entropy and enthalpy

Heat flows from _______ to ______ objects

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

Tags

NGSS.HS-PS3-4

The heat required to raise the temperature of WATER 1∘C

• calorie
• joule
• specific heat
• energy

How much heat does an aluminum block absorb if 10.00 grams is heated from 25.0^oC to 50.0^oC? *Specific heat of aluminum is 0.900 J/g^oC

• 450 J

• -450 J

• 225 J

• -225 J

Tags

NGSS.HS-PS3-1

What is work?

• A job

• Something you don't want to do

• The ability to do work or supply heat

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-3

What is thermochemistry?

• The study of chemistry

• The study of heat and chemistry

• The study of heat

• The study of heat changes that occur during a chemical reaction & physical changes of state

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-1

When you add heat energy...(select all that apply)

• Temperature increases

• Kinetic energy increases

• Kinetic energy decreases

• Temperature decreases

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2