Kinetic Molecular Theory: Understanding Temperature and Phase Ch

What does the kinetic molecular theory explain?

• The behavior of gases in terms of the motion of their particles

• The chemical composition of substances

• The electrical conductivity of metals

• The color changes in chemical reactions

How is temperature related to the kinetic energy of molecules according to the kinetic molecular theory?

• Temperature is directly related to the average kinetic energy of molecules

• Temperature is inversely related to the average kinetic energy of molecules

• Temperature is unrelated to the kinetic energy of molecules

• Temperature is only related to the potential energy of molecules

What happens to the particles of a substance when it is heated?

• They gain energy and move more vigorously

• They lose energy and move less

• They stop moving completely

• They change their chemical structure

Why do metals generally have higher melting points compared to molecular compounds?

• Metals have strong intermolecular forces

• Metals have weak intermolecular forces

• Metals have lighter molecules

• Metals have no intermolecular forces

What occurs during a phase change from solid to liquid?

• Molecules break free from their fixed positions

• Molecules form stronger bonds

• Molecules lose all kinetic energy

• Molecules become electrically charged