The Emergent Properties of Water
Draw a hydrogen bond using water molecules!
makes me buy something to insert images ):
How many valence electrons does Oxygen have?
6
What are the subatomic particles of an atom? Which ones have mass, and which ones have charge? Where are each located?
Protons, neutrons, and electrons. Protons and neutrons have mass (1amu), and electrons and protons have charge.
What kinds of molecules dissolve in water? Why?
Polar molecules because like dissolves like.
Which 4 elements make up 96% of living matter?
Carbon, Hydrogen, Oxygen, and Nitrogen
What is an Isotope?
An element with a different number of neutrons but the same number of protons.
What emergent property of water allows a raft spider to walk on the surface of water? What causes this?
Surface tension caused by hydrogen bonds between water molecules.
What are valence electrons?
An electron located in the outermost energy level of an atom.
What is the atomic number of an element?
Is ice less or more dense than liquid water? Give a reason on a molecular level why this is true.
Ice is LESS DENSE than liquid water because when frozen, H-bonds are locked in place and keep molecules further apart.
What determines what element you have?
The number of protons in the nucleus of an atom.
What is electronegativity?
What is the specific heat? Why is water's specific heat so high, and why is that important for life on Earth?
Specific heat is the amount of heat required to raise 1g of a substance by 1 degree C. Water has a high specific heat because of hydrogen bonding, and it is important for life because it helps regulate Earth's climate.
What kind of bond forms between Na and Cl, O and H in water, and C and H in a hydrocarbon respectively?
Ionic, polar covalent, and nonpolar covalent.
Are phospholipids polar or nonpolar? (may be a trick question)
Both!!