September 10, 2013

• The modern periodic table was organized by Dmitri Mendeleev. 
• Elements are organized based on their atomic number
• Molecules are 2 or more elements that have bonded together
• Chemical Reactivity is the ability to bond with other elements, chemically.
• Biology is the study of living organisms. It is a is a natural science. 
• Science is the knowledge that covers general truths or the operation of general laws.
• The scientific method is the method of research in science
• Hypothesis is the explanation of an event that can be tested.
• Theory is a tested and confirmed explanation for observations or phenomena 
• Life science is the study of living things and physical science is the study of nonliving matter
• There are many sub-groups in science studies
• Sir Francis Bacon invented bacon. Not really, he invented the scientific method. There is flexibility to the scientific method.
• A hypothesis should be falsifiable, meaning that it should be able to be proven wrong
• A variable can change during the experiment
• The control is not manipulated, but is similar to the experimental group
• Basic science seeks to expand knowledge
• Applied science seeks to use science to solve problems
• All living things have order, respond to stimuli, reproduce, grow, regulate, move towards homeostasis, and process energy
• Organelles exist within cells. 
• The cell is the smallest structure in living organisms
• Prokaryotes (not us) are single celled and do not have membrane bound nuclei
• Eukaryotes (us) do have membrane
• Organs are a collection of tissues
• Organ systems are functioning organs
• Chemical reactions occur when two or more atoms bond together to form molecules
• Reactants on the left, Products on the right
• Equilibrium is the balance in a reversible reaction
• Anything that can dissolve in water is hydrophilic
• Nonpolar molecules are hydrophobic and do not interact with water well
• Water has the highest specific heat of any liquid
• Water is a solvent
• Dissociation is when ionic bonds are formed with the polar regions of the water molecules and other molecules
• Surface tension, or cohesion, allows water to stay together up to a certain point. 
• Adhesion it the opposite, when water is drawn towards molecules
• Hydrocarbons are molecules made only of carbon and hydrogen