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If a series of measurements agree closley but differs widely from the actual value , these measurements are
precise but not accurate
In division and multiplicaion , the answer must not have more sig figs than the
number in the calculation with the fewest number of sig figs.
A unit used to describe all the numbers known with certainty plus one estimated digit is
the direction in the flow of heat energy is
from a substance of higher temperature to a substance of lower temperature
The combination of 2 or more kinds of matter, each of which retains it's own properties is a
According to the color code of the periodic table , elemtns that are liquids at room temperature are
Who is the english school teacher who studied chemistry and formulated principles of an Atomic theory that is recognized today?
The behavior of the cathode rays produced when exposed to a magnetic field, led scientist to conclude that the rules
were composed of negatively charged particles
One of the colclusions Rutherford made about the structure of an atom is
an atom contains a small,dense,positively charged central region
The atomic mass listed on the periodic table is the
average atomic mass of all isotopes that exist for that element.
The smallest unit of an elemnt that can exist either alone or in combinatino with other such particles of the same or different elements is
If an atom has the first two energy levels filled with the maximum amount of electrons, how many will it total?
when writing the complete electron notation, some of the numbers are not grouped together. the reason is
the energy levels overlap
The arrangement of elements in order of their atomic numbers so that elements with similar properties fall in the same group or family is
the periodic law.
Ramsay and Strutt discovered a unique group of unreactive elements which he added to the periodic table as the
The numerical range for two atoms to have a ionic bond would be a difference in electronegativity of
anything above 1.70
The numerical range for two atoms to hae a nonpolar covlent bond would have have a difference in electronegatvity of
0.00 -- 0.30
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