Front

What is the formula for aluminum chloride?

Back

AlCl₃

Front

What happens to atomic radius across a period?

Back

It decreases due to a greater pull from protons.

Front

Electronegativity __________ from left to right within a period and __________ from top to bottom within a group.

Back

increases, decreases

Front

Which molecule is polar?

Back

Water (H₂O) is a polar molecule.

Front

How does the Thanksgiving experiment demonstrate the concept of polarity?

Back

It demonstrates that polar molecules like water and non-polar molecules like oil do not mix.

Front

What is polarity in chemistry?

Back

Polarity refers to the distribution of electrical charge over the atoms joined by the bond.

Front

What is an example of a non-polar molecule?

Back

Oil is an example of a non-polar molecule.

Front

What is the significance of electronegativity in chemical bonding?

Back

Electronegativity determines how atoms attract electrons in a bond.

Front

What trend is observed in electronegativity across a period?

Back

Electronegativity increases from left to right across a period.

Front

What is the atomic radius?

Back

The atomic radius is the distance from the nucleus of an atom to the outermost electron shell.