Question

true or false – circle one

1. polar molecules have a positive and negative end. true / false
2. all liquids act the same. true / false
3. water is a polar liquid. true / false
4. water can slowly wear down rock. true / false
5. polar liquids can stick to each other. true / false

fill in the blank

1. polar molecules have a ____ and ____ end. (positive / negative / flat)
2. when polar molecules touch, they can ______ together. (stick / freeze / jump)
3. water can cause ______ by wearing down rock over time. (erosion / dancing / bouncing)

Explanation:

Question 6:

Polar molecules have a positive end (where electrons are less dense) and a negative end (where electrons are more dense) due to unequal sharing of electrons, so the statement is true.

Liquids can be polar (e.g., water) or non - polar (e.g., oil). Polar and non - polar liquids have different behaviors (like solubility, intermolecular forces), so not all liquids act the same. The statement is false.

Water ($H_2O$) has a bent molecular geometry. The oxygen atom is more electronegative than hydrogen, so it pulls electrons more, creating a partial negative charge on O and partial positive charges on H. This makes water a polar liquid, so the statement is true.

Answer:

True

Question 7: