chemistry (elements and compounds)

element

simplest form of matter

it is made up of only one kind of atom

ELEMENTS

compounds

composed of two or more different elements

periodic table of elements

a list of all known elements in a tabulated form

colums

groups

rows

period

how are elements classified?

metals

non-metals

metalloids

chemical reaction

this is the process of creating compounds

what are the kinds of chemical reaction

exothermic

endothermic

exothermic reaction

chemical reaction that gives of heat (combustion)

encothermic reaction

chemical reaction that absorbs heat (photosynthesis)

how are the compounds categorized?

based on the presence of the element carbon

organic

inorganic

based on the type of bonding between the consituent elements

ionic

covalent

organic

class of compounds in which one more carbon atoms are bonded to other elements, mostly hydrogen, oxygen, or nitrogen

inorganic

a class of compounds lacking carbon-hydrogen bonds

ionic

electron transfer

covalent

electron sharing