matter
anything that has mass and takes up space
chemeitsry
study of the compositions of matter and the changes that matter undergoes
what are the 5 studys of chem
organic, inorganic, biochem, aalitical, physical
orgainic chem
anything with carbon
inorgainc chem
no carbon
bio chem
processes that take place in living things
anylitical
comp of matter
physical chem
deals with rate of energy transfer
reasons for studying chem
explaining natral world, prepairing for cancer, being an informend citizen
technology
society giving what is needed and desired
independent varible
minupulated varible
depentet varible
responding varible
theory
well tested explination fr broad range od ideas
scietrific law
statement that is always true and summerizes the reasons fro a bread reange of experiments
extencive proporty
depends on the amount of matter in the substance
intensive proporty
depends on type of matter in the substance
physical proporty
can be observed
physical change
composition does not change
chemical change
compostion does change
mixture
physical blend of two or maore componets
heterogeneous mixture
mixture that compositon is not uniform throughout the substance
homogeneous mixture
mixture that compositon is uniform throughout the substance
distilation
boliling t seperate substances by boiling point
element
simplest form of matter
compound
containing two or more lemnetns chemicaly combined
accuracy vs precition
precition is smae while accuracy is close or on the accempted value
hw many sig figs 0.30
2
how to transform c to k
add 273