Why does liquid water have such a high heat capacity?Choose 1 answer:Choose 1 answer:(Choice A)   Water is a nonpolar molecule.AWater is a nonpolar molecule.(Choice B)   Water molecules are good at forming and breaking hydrogen bonds.BWater molecules are good at forming and breaking hydrogen bonds.(Choice C)   Water molecules are packed very closely together.CWater molecules are packed very closely together.(Choice D)   Water is a linear molecule which makes absorbing heat easier.DWater is a linear molecule which makes absorbing heat easier.

Water is important to all living things.How does the high heat capacity of water help support life?Choose 2 answers:Choose 2 answers:(Choice A)   It makes water safer for most animals to consume as a high heat capacity reduces harmful pathogens in the solution.AIt makes water safer for most animals to consume as a high heat capacity reduces harmful pathogens in the solution.(Choice B)   It makes water better at dissolving nonpolar substances like oils.BIt makes water better at dissolving nonpolar substances like oils.(Choice C)   It makes water a great habitat for marine life because marine organisms do not experience a wide temperature range.CIt makes water a great habitat for marine life because marine organisms do not experience a wide temperature range.(Choice D)   It allows animals to have highly regulated internal body temperatures.DIt allows animals to have highly regulated internal body temperatures.

All of the following are properties of water EXCEPT:Group of answer choicesWater has a high surface tension.Water molecules are attracted to each other through hydrogen bonding.Water has a higher boiling point than other substances with similar molecular mass.The solid phase is more dense than the liquid phase.Water is a polar molecule.

The heating curve for water is shown below. Which of the following best describes what is happening on the molecular scale in the section labelled 'd' on this graph?Question 25AnswerThe heat added breaks the intermolecular forces between the water molecules in the liquid phase allowing them to move into the gas phase. The heat added breaks the covalent bonds between the hydrogen and oxygen atoms in water generating hydrogen and oxygen gas.The heat added increases the kinetic energy of the molecules in the gas phase, increasing their speed and increasing the number of collisions with the vessel walls.The heat added provides the energy required for the formation of new intermolecular forces allowing the liquid water molecules to move into the gas phase.The heat added increases the kinetic energy of the molecules in the liquid phase, increasing their motion and expanding the volume of the liquid.

What property of water accounts for the ability of water molecules to adhere to polar molecules and surfaces other than water?Multiple choice question.Evaporative coolingHigh heat capacitySurface tensionAdhesion

Which of the following best describes the specific heat of water?A.It is similar to the specific heat of metals.B.It is one of the lowest of all substances.C.It is lower than the specific heat of solids.D.It is one of the highest of all substances.