Compounds
element properties
the formation and function of molecules
Chemical bonds
Formic acid
Chemicals in relation to insects
Matter
Element
compound
Essential elements
Essential elements that are 96% of living matter
Essential elements that are 4% of living matter
trace elements
what is the trace element that is needed by all forms of life?
What is Goiter?
What causes Goiter to happen?
What are the essential elements that are needed by humans?
What are the trace elements that are needed by humans?
What is the chemical connection to biology?
What are the elements of life?
How did the tolerance to toxic elements evolve?
Atom
What are subatomic particles?
Proton
Neutron
Electron
atomic nucleus
Where are electrons found?
Proton and neutron mass
atomic number
mass number
atomic mass
What are isotopes?
stable isotopes
decay
radioactive isotope
radioactive isotopes as diagnostic tools in medicine
tracers
What is radiometric dating?
half-life of an isotope
energy
Potential energy
Does matter tend to move towards the lowest or highest possible state of energy?
potential energy of an electron
can electrons exist between energy levels?
kinetic energy
electron shells
how do electrons move from one electron shell to another?
When an electron ABSORBS energy, does it move toward the nucleus or away from the nucleus?
valence electrons
When an atom has a full valence shell is it reactive or nonreactive?
electron orbital
S - orbital
what is its shape?)
P - orbital
(what is its shape?)
chemical bonds
how do atoms with incomplete valence shells acquire complete valence shells?
Valence
What is a covalent bond?
Molecule
Lewis dot structure
Structural formula
double bond
electronegativity
non-polar covalent bond
Polar covalent bond
ion
cation
anion
ionic bond
ionic compounds
what effects the strength of ionic bonds?
Weak bond
The reversibility of weak bonds as an advantage
When is an ionic bond weak?
hydrogen bonds
Vander Waals interactions
Are electrons evenly distributed when involved in a Vander Waals interaction?
where do Vander Waals interactions occur?
molecular shape
a molecule with only two atoms is what...?
tetrahedron
molecular shape
endorphins
morphine
Chemical reactions
reactants
products
Matter is conserved in a chemical reaction.
True or False
Concentration of the reactants affects the rate of reaction.
True or False
chemical equilibrium
What is the smallest unit of matter?
AND
What are its particles?
Atomic mass vs. Atomic number
Ionic bonds vs. covalent bonds
Name two weak chemical reactions
Why do we care about the shape of molecules in biology?
