Final answer:
The answers to the provided multiple choice questions are c. polarity, d. adhesion, a. the two hydrogen (H) atoms, b. surface tension, and b. High heat of evaporation respectively. These are all properties and characteristics of water that make it unique and vital to life.
Step-by-step explanation:
The term that refers to water having partial positive charges and a partial negative charge is polarity (choice c). This characteristic stems from the uneven distribution of electrons in the water molecule, where the oxygen atom has a partial negative charge and the hydrogen atoms have partial positive charges.
The property that allows water to stick to the surface of a leaf is called adhesion (choice d). This refers to the ability of water to stick to other substances, hence allowing it to attach itself to a leaf's surface.
The part(s) of a water molecule that has/have a partial positive charge are the two hydrogen (H) atoms (choice a). This occurs due to the unequal sharing of electrons between oxygen and hydrogen.
The characteristic of water that allows a paperclip to remain floating on water, even though paperclips are denser than water, is the surface tension (choice b). This is due to the cohesive forces between water molecules.
The characteristic that helps you cool down from sweating is the High heat of evaporation (choice b). This because evaporation of sweat from the skin surface requires heat, which it takes from the body, thereby cooling it down.
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