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gaby b.

• 56

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Experiment

an observation of natural phenomena, carried out in a controlled manner, so the results can be duplicated and rational conclusions can be obtained

hypothesis

a tentative explanation of natural phenomena

observation

uses of the senses, or extensions thereof, to acquire information about natural phenomena

theory

a tested explanation of natural phenomena

law

a concise statement or mathematical equation about natural phenomena

Rank the order of confidence with regard to being correct

G-L

1. law

2. theory

3. Hypothesis

Can a scientific law be wrong

To be scientific, an explanation of natural phenomena must have the potential to be

What should be do when the results disagree with our ideas of nature

a law usually applies to

2 requirements of experiment

Ideal gas law

To be scientific, a hypothesis or theory must

scientific method

qualitative attribute

quantitative attribute

quantative properties

dimensionless qualietes

dimensional qualities

elementary dimensions

compound dimensions

metric system

SI system

multplying a measured quality by a conversion factor changes

numerical value of a conversion factor

how are conversion factors used

when units are squared

when you convert a measurement in one set of units to a different set of units

Non-zero digest are

zeros at the beginning of a # are

zeros to the R of the decimal

1 or more consecutive 0 between sig digs

0s at end of number w/o decimal

indeterminate

0 is only sig if

sig figs in multiplication and division

sig figs in addition and subtraction

infinite sig figs

Charge of electron

protons charge

Protons are found

which subatomic particle has the smalls mass

protons determine

gives the atom volume

atomic number

mass number

isotopes

if 2 atoms are isotopes

how to determine neutrons

a X

z

electrons are found

do decide which element an atom belongs to you need to know

outside the nucleus consists of

the total # of subatomic particles in the nucleus is

if you sub atomic # from mass #

isotopes

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