HEAT: Intermolecular forces

Intermolecular forces are the forces

• within molecules

• between molecules

In general, substances with stronger intermolecular forces have ________ boiling points than those with weaker forces

• Higher

• Lower

• The same

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

Your teacher leaves a coffee cup on the table after brewing a fresh pot. The cup is very hot and changes the temperature of the table around it. What happened to the particles in the table?

• The particles sped up

• The particles got larger

• The particles got smaller

• The particles slowed down

When Ice melts why does the temperature stay at zero for a while before increasing ?

• The particles must all reach the same temperature before the temperature can change.

• The hot plate wasn't turned on.

• The thermometer was not connected correctly.

• The kinetic energy was too high and the particles had to slow down.

In general, substances with stronger intermolecular forces have ________ boiling points than those with weaker forces

• Higher

• Lower

• Forces and boiling point are not related

What is an ion?

• A Charged Atom

• A Large Atom

• A Small Atom

• A Cute Atom

An atom becomes _________ when it gains electrons.

• Positive

• Negative

• Neutral

• Invinsible

An atom becomes _______ when it loses electrons.

• Positive

• Negative

• Neutral

• Invinsible

Which particles change the charge in atoms when ions are formed?

• Protons

• Electrons

• Neutrons

• Kittens