FIRST PT CHEM 2

Based on the KMT, what happens to the kinetic energy of the particles as

temperature increases?

• KE increases

• KE decreaseS

• KE remains the same

• .KE is constant

Which of the following is NOT true about the properties of liquids?

• Liquids are incompressible

• The molecules in liquid can move past one another freely

• Liquid can flow, can be poured, and assumes the shape of its container

• In a liquid, the molecules are so close together that there is very little

  empty space.

Juan observed the ice as it melts on the table. He wondered what happened

to the movement of the particles present on the ice. Which of the following

concepts can help Juan?

• The movement of the particles become slower as phase change happens.

• The movement of the particles become slower because there are spaces

  between particles.

• The movement of the particles become faster because the temperature of

  the ice changes sufficiently as phase change happens.

• The movement of the particles become faster because the particles in ice

  is faster than the particles in water.

. Which is NOT true about London Dispersion Force?

• It is present in all molecules whether polar or nonpolar.

• Forces are higher with higher boiling point.

• The higher the surface area, the higher the forces

• Exhibit stronger dispersion forces with smaller and lighter atoms/

  molecules.

Which shows decreasing order of intermolecular forces?

• . London Dispersion Forces > Dipole-Dipole Forces > Hydrogen Bonds >

  Ion-Dipole Forces

• . Ion-Dipole Forces > Hydrogen Bonds > Dipole-Dipole Forces > London

  Dispersion Forces

• Dipole-Dipole Forces > London Dispersion Forces > Hydrogen Bonds >

  Ion-Dipole Forces

• Hydrogen Bonds > Dipole-Dipole Forces > London Dispersion Forces >

  Ion-Dipole Forces

Which of the following descriptions are true to dipole-dipole forces?

I. permanent attractive force

II. two polar molecules

III. Ion and polar molecules

• I and II

• . II and III

• . I and II

• I, II and III

What bond exists between the Oxygen and Hydrogen atoms in water?

• Covalent Bond

• . Hydrogen Bond

• Metallic Bond

• Ionic Bond

Which property of matter shows a liquid’s resistance to flow?

• . Ductility

• Viscosity

• Boiling point

• Being brittle

What happens to the viscosity of syrup when the temperature increases?

• . Becomes higher

• Becomes lower

• May become higher or lower

• Nothing will happen

Why does an insect float on water?

• Because water has high surface tension.

• Because water has low surface tension

• . The density of the insect is high.

• . The density of the insect is low.