Question

question 3 (2.5 points)
what molecule would be considered a covalent compound?
oxygens (o₂)
sodium chloride (nacl)
water (h₂o)
a diamond (c)
ozone (o₃)
question 4 (2.5 points)
which property of water molecules is responsible for movement of water from roots to leaves in a plant?
hydrophobicity
temperature stability
fusion
solvent polarity
cohesion

Explanation:

For Question 3, a covalent compound is formed by sharing of electrons between atoms. Water ($H_2O$) has covalent bonds between hydrogen and oxygen atoms. Oxygen ($O_2$) and ozone ($O_3$) are elements not compounds. Sodium chloride ($NaCl$) is an ionic compound. Diamond (C) is an elemental form of carbon with covalent - network structure but not a compound in the traditional sense for this context.
For Question 4, cohesion is the property of water molecules that allows them to stick together. This property is responsible for the movement of water from roots to leaves in a plant through processes like capillary action.

Answer:

Question 3: C. water ($H_2O$)
Question 4: E. cohesion