The Basics
Which of the 3 states of matter has a definite shape and volume?
Solid
Name the 3 subatomic particles
Proton
Neutron
Electron
What is the principal energy level of Barium?
What element is described by the following?
Period 4, Group 6
Cr (Chromium)
A type of bond that involves sharing electrons
covalent
Give a food example of a heterogenous mixture
Cereal, pizza, salad, etc.
In a given atom, the number of ______ can NEVER change.
Protons
Which sublevel (s, p, d, f, etc.) resembles a clover?
d
Which group # are the alkaline earth metals?
2
What noble gas will calcium become isoelectronic with? What will its charge be after?
Argon
+2 (it will loose 2 electrons)
List 3 examples of physical properties
Color, odor, state of matter at room temp, freezing point, boiling point, etc.
Isotopes are atoms with the same number of _____, but a different number of ______.
Protons; Neutrons
What is the maximum number of electrons that can be described by n=2 ?
8
Electronegativity will _______ going left to right, and will _____ going down in the periodic table.
increases; decreases
use the electron dot structure to determine the compound that would be made from calcium and phosphorous
Cs3P2
How many millimeters are in 1 meter?
1000 mm
For a Sodium atom with a -2 charge, give the following values:
1) atomic number
2) mass number
3) # of protons
4) # of neutrons
5) # of electronbs
1) 16
2) 32
3) 16
4) 16
5) 18
Write the electron configuration for Gallium. Include both the long form and the noble gas abbreviation.
1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p1
[Ar] 3d10 4s2 4p1
Atomic radius will _______ going left to right, and will _____ going down in the periodic table.
decrease; increase
Draw the structural formula (including bonds and other electrons) for P2
:P (tripple bond) P:
How many seconds are 0.750 days? Put your answer in scientific notation with the correct number of sig-figs
6.48 * 104 seconds
An element has the following natural abundances and isotopic masses: 90.92% abundance with 19.99 amu, 0.26% abundance with 20.99 amu, and 8.82% abundance with 21.99 amu. Calculate the average atomic mass of this element.
20.16 amu
Identify the subshell in which electrons with the following quantum number is found:
n = 6, l = 0
6s
What is ionization energy?
The amount of energy required to remove an electron from an atom?
What is the geometric name for the molecule: CF2Br2 ? Is it polar or non-polar?
tetrahedral
polar