Thermochemistry review

Heat is measured in 

• joules
• grams
• degrees celcius

Energy can not be created or destroyed, it can only be transferred refers to the....

• law of conservation of energy
• law of conservation of mass
• life facts
• law of conservation of chemistry

A slower particle has a lower energy than an identical, faster particle.

• True
• False

The transfer of thermal energy between objects of different temperatures is called...

• temperature
• heat
• internal energy
• none of these

When thermal energy is added to a substance, the substance's particles move:

• More rapidly at an increased diestance from each other.
• More rapidly with less distance between each other.
• More slowly with a greater distance between each other.
• More slowly with a reduced distance between each other.

Heat transfer by conduction occurs when...

• particles bump into each other
• large numbers of atoms move from place to place
• atoms give off heat in the form of electromagnetic waves
• electromagnetic waves travel from place to place through a vacuum

Heat transfer by convection occurs when...

• electrons bump into other electrons
• large numbers of atoms move from place to place
• atoms give off heat in the form of electromagnetic waves
• electromagnetic waves travel from place to place through a vacuum

Heat travels from the sun to the earth by the process of...

• conduction
• convection
• radiation
• insulation

The first law of thermodynamics states that energy is

• created
• destroyed
• conserved
• created and destroyed

H₂ + 2 C + N₂ + 270.3 kJ --> 2 HCN
Is this reaction endothermic or exothermic?

• Endothermic 
• Exothermic