Notes

- matter is any physical object composed of matter, which is later turned into protons, neutrons, electrons
- electrons can be gained from an element when it collides with an atom, either pushing or repelling it
- an atom is the smallest particle of matter
- an element contains one type of atom
- electrons are located on the outside region of the nucleus of an atom
- electrons have a negative charge
- protons have a positive charge
- neutrons have a neutral charge
- protons and neutrons are in the nucleus of an atom
- electrons are on the large region outside the nucleus of an atom
- lines in pyrimidine base represents bonding
- two lines in a pryimidine base represents sharing an electron
- protons differentiate elements
- atoms are unstable and unbalanced
- isotpoes: the number of protons and neutrons dropped
- electrons and protons are more important than neutrons
- the group of the element denotes the number of electrons on the outer shell
(# of protons) - (group #) = # of electrons on outer shell
# of electrons typically relate to the # of protons
- molecules are made of atoms, atoms of certain elements bond with other atoms to form molecules
- as elements of substances are combined, atoms lose individual properties and gain different properties from elements they consist of
- ionic compounds break into pieces by adding water, the sodium and chlorine ions will separate, causing the ionic compound to break in two