Water Molecule Properties and Experiments

The video tutorial demonstrates the interaction between static electricity and water molecules. A charged balloon is used to show how water's polar nature causes it to bend towards the balloon. The structure of water molecules, with their polar nature, is explained. The video also includes an experiment with glowing water under a black light, illustrating the electromagnetic attraction in a visually engaging way.

What is the purpose of charging the balloon in the experiment?

• To make it float

• To change its color

• To make it heavier

• To attract water molecules

What is the structure of a water molecule?

• Square

• Linear

• Bent

• Circular

What type of bond holds the atoms in a water molecule together?

• Hydrogen bond

• Covalent bond

• Metallic bond

• Ionic bond

Why does the oxygen atom in a water molecule have a negative charge?

• It shares electrons equally

• It loses electrons

• It gains protons

• It pulls electrons closer

What causes the water stream to bend towards the balloon?

• Gravity

• Wind

• Electromagnetic attraction

• Magnetic field

What is the charge of the hydrogen atoms in a water molecule?

• Variable

• Positive

• Negative

• Neutral

What is the effect of using a black light in the experiment?

• It makes the water evaporate

• It heats the water

• It changes the water's color

• It makes the water glow

What substance is added to the water to make it glow under a black light?

• Salt

• Vinegar

• Highlighter ink

• Sugar

What unexpected effect was observed with the water molecules around the balloon?

• They changed color

• They froze

• They evaporated

• They swirled around the balloon

What is the main reason for the swirling effect of water molecules around the balloon?

• Temperature change

• Air pressure

• Electromagnetic attraction

• Magnetic field