Question

student exploration: polarity and intermolecular forces
vocabulary: dipole, dipole - dipole force, dipole - induced dipole force, electronegativity, intermolecular force, ionic bond, london dispersion force, molecule, nonpolar, nonpolar covalent bond, partial charges, polar, polar covalent bond, valence electron
prior knowledge questions (do these before using the gizmo.)

1. a big bully is having a tug - of - war with a small child. there is a ball attached to the middle of the rope. toward whom will the ball move?
2. two equally strong kids are having a tug - of - war. what do you expect to happen to the ball in this situation?

gizmo warm - up

Explanation:

Step1: Analyze force in first case

The bully is stronger, so exerts more force.

Step2: Determine ball movement

The ball will move towards the one with greater force, i.e., the bully.

Step3: Analyze force in second case

Two equally - strong kids mean equal forces in opposite directions.

Step4: Determine ball movement

The net force on the ball is zero, so the ball will stay in place.

Answer:

1. The bully
2. The ball will stay in place.