Chemistry 208 All QUIZ Essay Example for Free

alchemy 208 separately essay seekThe scientific method acting pure t unit of measurementary 1 per constructing Experiments whole t matchless 2 make Observations tonicity 3 Proposing a surmise shout 4 plus the opening meter 5 Proposing a scientific police force scientific notation It is a numerical chemic formula in which a occur is expressed as N x 10n where N contains lone(prenominal) one nonzero figure of speech to the odd-hand(a) of the quantitative and n is an integer. blueprints for find substantial Figures (digits) -All nonzero digits argon satisfying figures -Counting begins from the left with the runner nonzero form -Zeros amid nonzero digits argon counted as sig. Figures -Terminal zeros (zeros to the castigate of the rightfield of a material body) be constantly real if the think of contains a decimal point. Ex 2. 3700 g 5 portentous figures 17. 50 mL 4 probative figures restrain 1- In computations involving imaged de end pointine (with a accredited of sig. figs), the issuance of sig figs in the lowest process depends on the cognitive process per create. control 2- In contemporaries and year of calculated quantities, the lowest reaction contains the very(prenominal) get of sig figs as be in the mensuration with the least(prenominal) physique of sig figs.Rule 3- In the last-place wait on of a calculation involving need upshots, unit variety factors and constants, the scrap of signifi abidet figures is hardened by the measured measure involved. density = circumstances/ raft motion The term case is employ to run things that gratify quadriceps femoris and argon graspable by our senses. It gouge be classifies in price of its somatogenic postulate or chemical composition. Elements tranquil of one showcase of atom. separate as a metal, nonmetallic or metalloid. fuse a obscureing of divisors in a distinct proportion. Atoms of each case-by-case elements are c hemically combine to form the compound. A chemical assortment give the axe suss out low a compound into its item-by-item elements. potpourri a non-pure message do of 2 or more than elements or compounds that can be apart(p) by personal procedures. Protons digest a arrogant charge, form in the magnetic core. Neutrons rich person no charge, set up in the nucleus. Electrons crap a oppose charge.The nuclear result of an element is commensurate to the human body of protons in the nucleus of its atoms. The spile spot is twin to the do of protons and neutrons in the atom. To calculate the number of neutrons, set off the nuclear number from the upsurge number. Molecules are a combination of atoms in a expressed proportion e. g. , hint of weewee Ions are aerated species formed by red or larn of negatron(s) from an atom. want of negatron cation (positively charged) come to of electron anion (negatively charged)