Thermochemistry

The study of energy changes that occur during chemical reactions and physical changes

• Energy
• Thermochemistry
• Heat
• Joule

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Energy stored in chemical bonds of a substance

• Calorimetry
• Chemical Kinetic Energy
• Temperature
• Chemical potential energy

Tags

NGSS.HS-PS1-4

Absorbs heat from surroundings making the surroundings cooler

• Endothermic process
• Exothermic process

A thermometer measures temperature which is best described as

• heat movement of particles
• average kinetic energy of particles
• calorimetry experiment
• specific heat of a substance

1.A sample of iron receives 50.J of heat energy that raises the temperature of the iron 25.0°C. If iron has a specific heat of 0.10 J/g°C, what is the mass of the iron sample?

• 0.20g
• 0.30g
• 20g
• 30g

Using the heat equation, what would the formula look like if we were solving for change in temperature?

• Q m=∆T c
• Q/mc= ∆T
• Qm/c=∆T
• mcQ=∆T

As a reaction is taken place,  the student notices that the temperature has dropped. This indicates that the system has increased in energy. What type of process is this?

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

How is heat change in a reaction measured? 

• Thermometer
• Specific Heat
• Calorimeter
• Heat of Formation

Tags

NGSS.HS-PS3-4

If there is an increase in H, why would this reaction feel cold to your hand?

• energy is absorbed from surroundings
• energy is released into surroundings
• heat moves from colder to warmer objects
• it would not feel colder

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

The reaction shown in this graph is 

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4