Question

how does water shape the earth? choose all that apply.
□ by transporting the products of weathering to other places.
□ by mechanically shaping rocks by flowing over or by frost wedging.
□ by dissolving minerals of rocks.
□ by directly taking part in chemical reactions that result in chemical weathering.
question 2
1 pts
iodine crystals does not dissolve in water. this is because
○ iodine crystals are non - polar and water is non - polar.
○ iodine crystals are non - polar and water is polar.
○ iodine crystals are polar and water is polar.
○ iodine crystals are polar and water is non - polar.

Explanation:

Question 1: How does water shape the Earth?

• Transporting weathering products: Water (via erosion) moves sediments, reshaping land.
• Mechanical shaping: Flowing water erodes rocks; frost wedging (water freezing in cracks) breaks rocks.
• Dissolving minerals: Water dissolves soluble rock minerals (chemical weathering).
• Chemical reactions: Water participates in reactions (e.g., hydrolysis) that alter rocks. All options describe water’s role in shaping Earth.

The principle “like dissolves like” applies: polar substances dissolve in polar solvents, non - polar in non - polar. Iodine ($I_2$) is non - polar. Water ($H_2O$) is polar (due to its bent structure and electronegativity difference). So non - polar iodine does not dissolve in polar water.

Answer:

• By transporting the products of weathering to other places.
• By mechanically shaping rocks by flowing over or by frost wedging.
• By dissolving minerals of rocks.
• By directly taking part in chemical reactions that result in chemical weathering.

Question 2: Iodine crystals do not dissolve in water. This is because...