Classification of Matter and Chemical/Physical Properties
Measurement
Atomic Theory and the Periodic Table
Ions/Molecules/
Chemical Nomenclature
Chemical Nomenclature
Ch. 6 (Electromagnetic radiation, Electron Configs)
100
How many sig figs are in the number 0.0500?
3
100
8.160 m = ________ cm
816.0 cm
100
Group 2 elements form ions with a charge of ______
+2
100
Name this compound:
N2O5
Dinitrogen Pentoxide
100
[Kr]4d105s25p6 is the electron configuration of
Xenon
200
A change producing a different kind of matter from the original kind of matter is a ____________ change
Chemical
200
__________ is defined as how closely a measurement aligns with a correct value
Accuracy
200
The _________________ states that properties of the elements are periodic function of their atomic numbers.
Periodic Law
200
Which is NOT a polyatomic ion?
Bicarbonate
Ammonium
Sulfite
Manganese
Manganese
200
Predict the electron configuration for N.
1s22s22p3
300
Provide an example of a chemical property.
Flammability, toxicity, reactivity, acidity, oxidation, rusting
300
A cube with a side length of 3 cm has a density of 5 g/cm3. What is the mass of the cube?
135 grams
300
Determine the number of protons, neutrons and electrons in the isotope, and name it.
atomic number 53, mass number 127, charge of 1−
iodine, 53 protons, 54 electrons, and 74 neutrons
300
Write the formula for Sodium Bicarbonate.
Na(HCO3)
300
FM-95, an FM radio station, broadcasts at a frequency of 9.51 × 107 s−1 (95.1 MHz). What is the wavelength of these radio waves in meters?
3.15 m
400
Pure substances that cannot be broken down into simpler substances by chemical changes is called a(n)
Element
400
Express 0.007157 in scientific notation with appropriate significant figures.
7.157 ×× 10−3
400
The following chemical change represented by these spheres may violate one of the ideas of Dalton’s atomic theory. Which one?
This violates Dalton’s postulate that that atoms are not created during a chemical change, but are merely redistributed.
400
Write the formula of the compound they will form:
NH4+, SO42−
(NH4)2SO4
400
What additional information do we need to answer the question “Which ion has the electron configuration 1s22s22p63s23p6”?
The charge on the ion.
500
Which represents less kinetic energy: 1 Kelvin or 1 degree Celsius?
1 Kelvin
500
The label on a soft drink bottle gives the volume in two units: 2.0 L and 67.6 fl oz. Use this information to derive a conversion factor between the English and metric units. How many significant figures can you justify in your conversion factor?
0.030 L /1 fl oz
2
500
Lithium has an elemental atomic mass of 6.941 u and has two naturally occurring isotopes, 6Li and 7Li. Their masses are 6.0151 u and 7.0160 u respectively. What are the natural abundances (to 2 decimal places in percentage) of the isotopes of Lithium?
6Li: 7.49%, 7Li: 92.51%
500
Name this compound:
FeCl2
Iron (II) chloride
500
What does it mean to say that the energy of the electrons in an atom is quantized?
Quantized energy means that the electrons can possess only certain discrete energy values; values between those quantized values are not permitted.