Test 1 TTK

Scientific method

• hypothesis

• controlled experiment

• properties of life

• DNA— how living things differ

• Natural selection

• SPONCH

• Compounds, molecules

• Atomic structure

o Nucleus — P & N= Atomic Mass

o P = Atomic number

o Electrons — shells - # electrons per shell

o Valence electrons

• Isotopes

• Bonding

o Ionic

o Covalent, polar covalent

o Water — properties

• pH scale — acids, bases

• Functional groups

• 4 major macromolecules — properties of each

Dehydration synthesis, hydrolysis