9.1 Preassessment

What does temperature measure?

• Heat
• ºC
• Kinetic Energy
• Thermal Energy

In an endothermic reaction the system is releasing energy.

• True
• False

What type of reaction is shown in the picture?

• endothermic
• exothermic

In an exothermic process, the surroundings are are gaining energy.

• True
• False

Ice cream melting is an example of an __________ process.

• endothermic

• exothermic

What device is used to measure the amount of heat involved in a chemical reaction or physical process?

• barometer

• calorimeter

• thermometer

Kinetic energy is energy gained _______________

• while at rest

• during motion

Heat flows from _______ to _________.

• warm to cool

• cool to warm

What area of study in chemistry is concerned with the heat transfers that occur during chemical reactions?

• stoichiometry

• thermochemistry

• inorganic chemistry

• physical chemistry

The law of conservation of energy states that

• in any chemical or physical change, energy cannot be created or destroyed, only changed in form.

• heat changes occur during chemical and physical changes.

• energy is the capacity to do work or to supply heat

• there are two types of energy, kinetic and potential