Thermodynamics Quiz

What is the symbol for enthalpy?

• T

• H

• P

• E

What happens during oxidation?

• An atom gains electrons

• An atom loses electrons

• A substance turns into gas

• An element changes into another

Which of the following is an example of an endothermic reaction?

• Freezing water

• Condensation of steam

• Photosynthesis

• Rusting of iron

What does "Redox" stand for?

• Reduction and Oxidation

• Reaction and Oxygen

• Red and Oxide

• Reverse and Oxygen

In a redox reaction, oxidation and reduction occur _______.

• Separately

• At the same time

• Only in metals

• Only in acids

Which of the following is not a thermodynamic process?

• Isothermal

• Isochoric

• Adiabatic

• Photochemical

What is the oxidation state of manganese in KMnO₄?

• +5

• +7

• +2

• +3

A reaction that absorbs heat from its surroundings is called a _______ reaction.

• Exothermic

• Endothermic

• Neutralization

• Combustion

The unit of heat in the SI system is:

• Calorie

• Joule

• Watt

• Kelvin

Which of the following is an extensive property?

• Temperature

• Pressure

• Volume

• Density