REVIEW Properties of Water Chemistry of Life
Atomic number = # of protons = # of electrons
What is this? Of which element? An atom Lithium
What is a pure substance composed of two or more elements? COMPOUND C6H12O6
What is a pure substance composed of one type of atom? ELEMENT
ELEMENT or COMPOUND CO2 H Na Br CaCl2 BaCO3
How many electrons? 8 How many protons? 8
ELEMENT or COMPOUND
? Chemical bond
Hydrogen bonds ?
Polar or Nonpolar Polar
Polar or Nonpolar
Polar or Nonpolar
H2O O H H Water is polar!
Water has a high specific heat. During the hot summer, the pond’s temperature remains at a warm 82° F. This is an example of Water has a high specific heat.
cohesion Water forms beads on the surface of this leaf. This is an example of cohesion
Water sticks to the grass. This is an example of adhesion
What happening on the surface? cohesion
What happening here? ? adhesion
?
Hydrogen bonding Cohesion and adhesion occur because of
? solute ? solvent
? ? ?
Why is the paper clip floating? Surface tension
Why does water form a sphere in the space station? Cohesion
? cohesion adhesion ?
Water is a common cleaning agent. It is most effective for dissolving substances with which characteristic? a) polar bonds b) high density c) high specific heat d) covalent bonding
What accounts for many of the unique properties of water that make it essential for life? a) covalent bonding between water molecules b) covalent bonding between oxygen and hydrogen c) high specific heat d) hydrogen bonding between water molecules
What property of water allows ice to float? a) ice is less dense than liquid water b) ice is more dense than liquid water c) ice has a high specific heat d) water has a high specific heat
Which property causes the cohesion and adhesion of water molecules that moves water through a plant against the force of gravity? a) density b) volume c) polarity d) heat capacity
Acid Base
Not complete Examples of ph
Chemical bond where electrons are shared? Covalent bond
Chemical bond where electrons are transferred? Ionic bond
Everyone A’s and B’s We can do this!!!! Study!!!!!