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Terms in this set (50)
which field of science studies the composition and structure of matter?
the study of chemicals that, in general, do not contain carbon is traditionally called what type of chemistry?
a theory is a ____.
Dependent variable (responding variable)
the variable that is observed during an experiment is called what type of variable?
which state of matter is characterized by having a definite shape and a definite volume?
the closeness of a measurement to its true value is a measure of its
what is the SI unit of mass?
which temperature scale has no negative temperatures?
who was the man who lived from 460 b.c.-370b.c. and was among the first to suggest the idea of atoms?
the atomic number of an element is the total number of which particles in the nucleus?
the sum of the protons and neutrons in an atom equals the
isotopes of the same element have different
what are quanta of light called?
which scientist developed the quantum mechanical model of the atom?
who predicted that all matter can behave as waves as well as particles
which color of visible light has the SHORTEST wavelength
how are frequency and wavelength of light related
s and p blocks
what is another name for representative elements?
what is another name for the transition metals?
the modern periodic table is arranged in order of increasing atomic
who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
Of the elements Pt, V, Li, and Kr, which is a nonmental
how does atomic radius change from left to right across a period in the periodic table?
what is the energy required to remove an electron from an atom in the gaseous state called?
how many valence electrons are in an atom of phosphorus?
1s2 2s2 2p6 3s2 3p6 4s2
what is the electron configuration of the calcium ion
a metal and nonmetal
an ionic bond is a bond between
which of the following processes involves a change in physical properties? rusting, fermenting, boiling, burning
ability to decompose
which of the following is a chemical property of water at 4 degrees celsius? its color, its state, its temperature, its ability to decompose into hydrogen and oxygen
which of the following involves a chemical change? mixing, melting, grinding, decomposing
1.54 x 10^-10 m
the diameter of a carbon atom is 0.000000000154 m. What is the number expressed in scientific notation?
what is the result of multiplying 2.5 x 10^10 by 3.5 x 10^-7?
three different people weigh a standard mass of 2.00 g on the same balance. Each person obtains a reading of 7.32 g for the mass of the standard. These results imply that the balance that was used is
how many significant figures are in the measurement 811.40 grams?
express the sum of 1111 km and 222 km using the correct number of significant digits
express the product of 4.0 x 10^-2 and 8.1 x 10^2 m using the correct number of significant digits
what is the temperature -34 degrees celsius expressed in kelvins?
what is the density of an object having a mass of 8.0 g and a volume of 25 cm^3
the particles that are found in the nucleus of an atom are
an element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are
the closer it gets to the nucleus, the lower the energy becomes
how does the energy of an electron change when the electron moves closer to the nucleus?
the principal quantum number indicates what property of an electron
What is the shape of the 3p atomic orbital?
what is the maximum number of d orbitals in a principal energy level
3s 3p 3d
what types of atomic orbitals are in the third principal energy level?
electrons enter sublevel with the lowest energy first
according to the aufbau principle,
principal energy level
each period in the periodic table corresponds to a
1s2 2s2 2p6 3s2 3p6 4s1
What is the electron configuration of potassium?
how many unpaired electrons are in a sulfur atom, which has the atomic number 16?
the lowest whole-number ratio between ions in the ionic compound
the chemical formula of an ionic compound shows
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