Question

1. choose all that apply. which two of these are required for a compound to be formed by elements? must physically combine must be in reciprocal proportions must chemically combine must be in definite proportions 6) type your answer below. how does polarity affect the property of water?

Explanation:

For question 5, a compound is formed when elements chemically combine and are in definite proportions. Physical combination forms mixtures, and reciprocal proportions is not a requirement for compound - formation. For question 6, water's polarity leads to hydrogen - bonding between water molecules. This causes high surface tension, high heat capacity, and the ability to dissolve many substances.

Answer:

1. C. must chemically combine, D. must be in definite proportions
2. Water's polarity causes hydrogen - bonding between water molecules, resulting in high surface tension, high heat capacity, and good solvent properties.