Which statement is true of water? Water molecules attract hydrophobic substances. Water evaporates after absorbing small amounts of heat energy. Water’s hydrogen atom is slightly negative. Water molecules are polar. Water’s oxygen atom is slightly positive.

Option (d) is the correct answer.

Explanation:

Hydrophobic substances are the substances which hate water molecules. Whereas hydrophilic substances are water loving substances.

As a water molecule contains an electropositive hydrogen atom and an electronegative hydrogen atoms. So, there is a partial positive charge on hydrogen atom and partial negative charge on the oxygen atom.

Therefore, water molecules are polar in nature.

Also, water has high specific heat value that is, 4.186 . Therefore, in order to evaporate it needs to absorb high heat and not small amount of heat.

Thus, we can conclude that the statement water molecules are polar is true of water.

hey there!

boiling point is the temperature at which the vapor pressure of the liquid equals atmospheric pressure. the vapor pressure of solvent molecules is decreased when a solute is added, so a higher temperature is required to increase the number of solvent molecules in the gas phase above the liquid.

at the freezing point, the vapor pressures of the solid and liquid are equal; a lower temperature is needed to reduce the number of solvent particles above the liquid.

hope this you

tobey

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6