All Things Atomic
It's Electron-fying
Solving Periodically
Mishmash
Let's React!
100
What element is in the 4th period in the halogen family?
Br
100
Which family has 7 valence electrons?
The halogen family
100
What charge will alkaline earth metals have when they become ions and why? (# and charge)
2+
They need to lose two electrons to become like a noble gas.
100
Identify each as either a chemical or physical change:
a) Dissolving salt in water
b) dry ice subliming to a gas
Both are physical
100
Write the formulas for:
iron(III) sulfate
disulfur trioxide
Fe2(SO4)3
S2O3
200
Give the symbol for the particle that has 26 protons and 23 electrons.
Fe3+
200
Nonmetals form (+ or -) ions by (gaining or losing) electrons. These are called (cations or anions)
negative, gaining, anions
200
Name an element that will react similarly to chlorine.
F, Br, I, At
200
What is the weight, in lb, of 1.4 L of zinc?
22 lb
x lb = 1.4 L x (1000 mL/1 L) x (7.13 g/1 mL) x (1 lb/453.6 g)
200
Balance and identify the type of reaction:
NaBrO3 --> NaBr + O2
2 NaBrO3 --> 2 NaBr + 3 O2
decomposition
300
How many p+, e-, no are in vanadium-51?
23 p+, 23 e-, and 28 no
300
Draw the orbital diagram for nitrogen.
300
Name two elements in the same family as Sr and have a larger radius than Sr.
Ba and Ra
They are larger because you are adding electron shells.
300
What type of compounds, ionic or molecular, are each and name them?
1) SF2 2) Co3N2
3) MgF2
1) molecular, sulfur difluoride
2) ionic, cobalt(II) nitride
3) ionic, magnesium fluoride
300
Finish and balance the following reaction:
C5H12 + O2 -->
C5H12 + 8 O2 --> 5 CO2 + 6 H2O
400
Electrons which (absorb or release) energy will move to a lower state and can produce a (continuous or line) spectrum.
release, line
400
The shorthand electron configuration for Ta (#73).
What is [Xe]6s24f145d3 ?
400
Which is smaller, S or S2-? Why?
S, because S2- has gained two electrons and the more e- repulsion has increased the overall size.
400
How many moles in 23.0 g magnesium fluoride?
0.369 moles MgF2
400
State whether the reaction will occur. If so, finish and balance it.
Al(s) + ZnCl2 -->
Yes it will occur because Al is higher on the activity series than Zn.
2 Al(s) + 3 ZnCl2 (aq) --> 3 Zn(s) + 2 AlCl3
500
Find the average atomic mass for Bt: 155Bt at 25.0% abundance and 157Bt at 75.0% abundance.
156.5 amu
avg mass = 155(25/100) + 157(75/100)
On the test this would be a multiple choice and you would probably be able to eyeball the right answer, if you understand the concept.
500
Which has a lower ionization energy, Be or Ca? Why?
Ca because it is larger so easier to lose electrons.
500
Draw the Lewis dot structure for PI3.
500
What is the mass, in g, of exactly 100 molecules of nitrogen trifluoride?
1.18 x 10-20 g
x g = 100 molec NF3 x{1 mol/6.02 x 1023 molec}x {71.01 g/1 mol}
500
Write the balanced reaction when barium chloride reacts with silver nitrate.
BaCl2 + 2 AgNO3 --> Ba(NO3)2 + 2 AgCl