basic chemistry flash cards

Set: basic chemistry

Familiarize		Learn		Test
Play Scatter			Play Space Race

	Term	Definition
	Atoms	basic components of matter the smallest parts of matter that have chemical properties
	Atomic number	the number of protons in the atom
	atomic mass	total mass of electrons, protons, neutrons in the atom
	isotopes	share the same atomic number but differ in atomic mass
	radio active isotopes	constantly decays other isotopes
	Half life	time of radio isotope to decay into something else
	electrons	small components that surround the nucleus and have a negative charge
	chemical bonds	formed when electrons are formed or shared between atoms
	chemical properties	determined by how full or empty the outer electrons shell is
	periodic table of elements	table with all known chemical and organic compounds
	left side of periodic table	have almost empty shell
	middle of periodic table	share electrons
	right side of periodic table	chemically inert because they have full outer shells
	electronegativity	the tendancy of atoms to grab electrons
	CHNOPS	carbon hydrogen nitrogen oxygen phospherous
	three chemical bonds	ionic covelant polar covalent
	hydrogen bond	unlike charges attract to each other
	ionic bonds	arise from elements with low electronegativity and bond to an elements with high electronegativity
	covelant bond	share electrons bonds with because of the partially outer shell energy level
	polar covelant bond	type of bond occurs when the atoms involved differ greatly in electronegativity

No Messages