WorksheetsWater and its influence on our world
Total questions: 20
Worksheet time: 20mins
Which of the following atoms is best suited for forming large macromolecules?
Hydrogen
Carbon
Oxygen
Nitrogen
How many bonds will a C atom form?
1
2
3
4
Hydrophobic means...
An attraction to water
To fear/dislike water
To like water
Hydrophilic means
An attraction to water
To fear/dislike water
Connects monomers to form a polymer by removing a water molecule
Dehydration synthesis
hydrolysis
Joins the monomer amino acids to form a protein by removing water molecules
Dehydration synthesis
hydrolysis
Polymers are made of
one unit
many units
single pieces
Buffers
resist a change in pH
increase pH number making the substance more basic
decrease the pH number making the substance more acidic
Keeps the pH at neutral
An Acid has a pH of
7
1-6.9
8-14
A base has a pH of
7
1-6.9
8-14
Acids
Break down protein and taste sour
are slippery feeling
are cleaners and taste sour
taste bitter
Examples of bases
Hand soap and bleach
apple juice and lemon juice
pure water
rain water
C,H,O,N
Carbohydrate
lipid
Protein
Nucleic Acid
high specific heat
energy needed to change the temperature of water
water molecules attracted to other molecules
water attracted to different substances
water molecules attracted to other molecules by a hydrogen bond
adhesion
cohesion as in capillary action moving water
less density as it freeze
What bond is between the oxygen and the hydrogen atoms in a water molecule.
ionic bond
covalent bond
hydrogen bond
cohesion
Why do the Hydrogens have a slight + charge
there are extra neutrons
there is only a general charge
the electron is drawn to the oxygen in the covalent bond
When water molecules are attracted to other water molecules in cohesion. The bond is. . .
adhesion
ionic
covalent
hydrogen
