Marine Chemistry

Marine Science Ch 3

Multiple Choice

What is the percentage of water that makes up the typical human body?

• 35%

• 50%

• 60%

• 85%

Multiple Choice

When two atoms are bonded together it is called a

• chain

• molecule

• group

• vesicle

Fill in the Blanks

what is the chemical formula for a water molecule?

Fill in the Blanks

what is the chemical formula for a water molecule?

Multiple Choice

the end of the molecule that is positively charged is attracted to which end on another molecule?

• positive end

• negative end

Multiple Choice

when particles move faster temperature goes

• up

• down

Multiple Choice

heat is measured in

• Fahrenheits

• kilos

• joules

• grams

Multiple Choice

which has more heat?

• the ocean

• a hot cup of tea

Multiple Choice

Water is the only substance found on Earth in all states (solid, liquid, and gas)

• true

• false

Multiple Choice

molecules of water vapor _______ held together with hydrogen bonds

• are

• aren't

Multiple Choice

at what temperature are water molecules held structurally together

• 
  

  $$0\degree C$$

• $$32\degree C$$

• $$100\degree C$$

• $$-32\degree C$$

Multiple Choice

degree of compactness of a substance

• mass

• volume

• density

• weight

Multiple Choice

water as a solid is ________ than as a liquid

• more dense

• less dense

Multiple Choice

the amount of heat required to raise the temperature of water is pretty high. Is that good or bad for marine life?

• good

• bad

Multiple Choice

the amount of heat required to raise the temperature of water is pretty high. Is that good or bad for marine life?

• good

• bad

Multiple Choice

the sticking together of particles of the same substance:

• adhesion

• cohesion

• magnetism

Multiple Choice

the higher the viscosity means that substance has

• more resistance to flow

• a high ability to flow

Multiple Choice

something that has the ability to dissolve another substance (the other one is the thing that is being dissolved)

• solvent

• solute

insects like water striders take advantage of this cohesion/surface tension to move across the surface of water

Multiple Select

which two elements make up salt?

• calcium

• sodium

• potassium

• nitrogen

• chloride

A beaker of water with sodium chloride ions bound by attractions between opposite charges. In the water, the weakly charged water molecules are attracted to the charged ions, and they cluster around the ions. This weakens the bonds between ions, which separate, or dissociate.

Multiple Choice

properties like light levels, pressure, and sound are

• the same underwater as on land

• different underwater as on land

Multiple Choice

the level that light can penetrate water is always the same no matter the body of water

• true

• false

Diagram of a river, fissure, and volcano transporting ions into the ocean. Ions like sodium, potassium, and magnesium tend to enter the ocean from rivers; sulfide and chloride enter from fissures and volcanoes.

Multiple Choice

which color of light can reach the deepest in the ocean?

• blue

• green

• red

• yellow

Multiple Choice

At sea level, how many atmospheres of pressure are you at?

• 1

• 2

• 3

• 0

Multiple Choice

sound travels _________ in water, than in air

• faster

• slower

Multiple Choice

the amount of dissolved salt in the water

• alkalinity

• salinity

• chlorinity

• sodium chloridity

Multiple Choice

the dissolved materials are the

• solute

• solvent

Sound travels fastest near the surface and at great depths. Its minimum speed is around 1,000 m deep, where the Deep Sound Channel is located.

Chloride, sodium, sulfate, magnesium, calcium, and potassium (in that order) are the most common ions found in seawater. 

Multiple Select

select the locations where these proportions could vary

• hydrothermal vents

• mouths of rivers

• open ocean

• areas of high biodiversity

Multiple Choice

the saltier the water the ______ it is

• more dense

• less dense

Multiple Select

many gases are dissolved in sea water, largely including...

• oxygen

• hydrogen

• nitrogen

• carbon dioxide

• carbon monoxide

Multiple Choice

_____ forms the backbone of all organic molecules

• nitrogen

• oxygen

• carbon

• hydrogen

Multiple Choice

which type of graph best shows the increase in atmospheric carbon dioxide?

• logistic growth

• exponential growth

Multiple Choice

How much of the CO2 emitted into the air each year is dissolved into the oceans?

• 5%

• 15%

• 30%

• 50%

Multiple Choice

greater CO2 concentrations can affect behavior of marine organisms

• true

• false