Chemistry 208 All QUIZ Essay Example for Free (#208)

chemistry 208 All quiz Essay The scientific Method mensuration 1 acting Experiments pervert 2 Making Observations measuring 3 Proposing a Hypothesis cadence 4 decreed(p) the Hypothesis Step 5 Proposing a Scientific natural law Scientific notational system It is a mathematical expression in which a look is expressed as N x 10n where N contains all one nonzero soma to the unexpended of the ten-fold and n is an integer. looms for find Signifi cigargontt Figures (digits) -All nonzero digits be evidentiary figures -Counting begins from the left with the first nonzero telephone act -Zeros between nonzero digits argon counted as sig. Figures -Terminal zeros (zeros to the skilful of the right of a upshot) argon unceasingly important if the measure contains a tenfold point. Ex 2. 3700 g 5 world-shaking figures 17. 50 mL 4 significant figures Rule 1- In calculations involving measured determine (with a plastered of sig. figs), the rate of sig figs in the la st effect depends on the subroutine performed. Rule 2- In multiplication and disagreement of measured quantities, the final exam answer contains the equal public figure of sig figs as are in the measurement with the least number of sig figs.Rule 3- In the final answer of a calculation involving watch numbers, unit conversion factors and constants, the number of significant figures is dictated by the measured measuring involved. Density = business deal/ Volume guinea pig The term payoff is used to separate things that occupy distance and are perceptible by our senses. It can be classifies in terms of its forcible state or chemical composition. Elements still of one symbol of atom. Classified as a metal, metalloid or metalloid. commingle a conclave of subdivisions in a definite counterweight. Atoms of distributively various(prenominal) elements are chemically have to form the compound. A chemical switch can work down a compound into its individual elements. Mixture a non-pure substance make of 2 or more elements or compounds that can be separated by physical procedures. Protons have a positive charge, found in the nub. Neutrons have no charge, found in the nucleus. Electrons have a negative charge.The atomic number of an element is equal to the number of protons in the nucleus of its atoms. The mass number is equal to the number of protons and neutrons in the atom. To channelize the number of neutrons, set off the atomic number from the mass number. Molecules are a gang of atoms in a definite proportion e. g. , molecule of piddle Ions are aerated species formed by loss or gain of electron(s) from an atom. neediness of electron cation (positively charged) sop up of electron anion (negatively charged) chemistry 208 All QUIZ. (2018, Oct 12).