2.2 – Properties Of Water Flashcards
polar molecules have slightly_regions
charged
water is an_molecule
polar
_Molecules do not have charged regions
Nonpolar
Nonpolar molecules have_specific heat
high
water absorbs heat but stays relatively_
cool
what is cohesion?
when like molecules stick together
what is adhesion?
when water molecule stick to other things
a_is formed when one substance dissolves in another
solution
A solution is a_mixture
homogeneous
_Dissolve in other substances
solvents
_Dissolve in a solvent
solutes
a_releases a hydrogen ion when it dissolves in water
acid
_
– High H+ concentration
– PH less than seven; lower the number the more acidic
acid
a_Removes hydrogen ions from a solution
base
_
– Low H+ concentration
– PH greater than seven; higher the number the more basic
base
a_solution has a pH of 7
neutral
what is an example of a neutral solution or a solution that has a pH of 7?
pure water
all living organisms contain_; because of this they are said to be organic
carbon
_ the only element that can support life as we know it
carbon
carbon can easily bond to each other; forming_chains,chains and. It has four bonding sites
- straight
- branched
- rings
_Are the largest molecules in living organisms
macromolecules
_Are the smallest unit that a macromolecule can be broken down into
monomer
what are the four macromolecules?
carbohydrates, lipids and fats, proteins, nucleic acid
_ – Supply energy; found in plants – Monomer=a monosaccharide (most common is glucose. C6H12O6) – Polysaccharide=Starches – Disaccharide=sucrose
carbohydrates
animal store, carbohydrates as glycogen; plant store them as_( cellulose in a cell wall )
starch
_
– Store energy
– Used to form biological membranes
– Structural unit=3 fatty acid and glycerol
lipids, or fats and oils
what are the three types of fats?
polyunsaturated fats, unsaturated fat and saturated fats
_
– contain the maximum number of hydrogen-carbon based molecules( form cholesterol in arteries)
– Meat products
saturated fat’s
_
– Many double bonds
– Canola oil/olive oil
polyunsaturated fat’s
_
– contain one or more double bonds; have less hydrogen molecule
– Oil/vegetable
unsaturated fat
_Acids are liquid oils I have been hydrogens to form a solid at room temperature, the body does not recognize them, because they’re not natural, so the body treats them like saturated fatty acid’s
Transfatty acids
