Properties of Water

"Life as we know it is impossible without water" explain why a scientist would make this claim

-Helps moderate Earth's climate -Transports substances in most living things -Provides ideal reaction condition for some biological processes - Helps keep temperatures good in many organisms

when water breaks down substances and surrounds individual molecules or particles: -- Dissociation --Hydration --Dissolving

Dissolving

What is waters boiling point (c)

100 degrees Celsius

Which statements are true based on specific heat? a) Land heats up/cools down faster than water b)Regions with moderate climates often have large bodies of water surrounding them c) Water boils quicker than alcohol or ether

A, B

Which functions of water in living systems would still be possible if water was not polar and did not form hydrogen bonds? a)climate regulation b)dissolving ionic compounds for biological reactions c)providing body support by exerting pressure on cell walls d)providing body support through buoyancy e)transport of nutrients within organisms f)temperature regulation in many organisms

C,D,E

When water breaks apart an ionic compound into cations and anions: -- Dissociation --Hydration --Dissolving

Dissociation

Dissolving salt in water reduces the intermolecular forces between water molecules. What most likely happens to the surface tension of water when salt is dissolved in it?

It decreases

T/F-- A water molecule would contain polar covalent bonds if it was linear instead of bent

True

when water surrounds substances that have been "broken apart": -- Dissociation --Hydration --Dissolving

hydration

Which process is not involved when water dissolves water. -- Dissocitation -- Hydration -- Ionization

ionization

Ice would _____ in water if it does not come from hydrogen bonds --float --sink

sink

Water readily dissociates ionic compounds, dissolves covalent molecules, and hydrates the smaller particles. This is most likely because...

water is a polar molecule