Nuclear Chemistry
Chemical Reactions
Types of Reactions
IONIC AND COVALENT COMPOUND
Atom and Periodic Table
100
The half-life of Zn-71 is 2.4 minutes. If one had 100g at the beginning, how many grams would be left after 7.2 minutes has elapsed?
12.5g
100
balanced
100
2H2 + O2 → 2H20
synthesis
100
Write the formula for dihydrogen monoxide
H2O
100
How many neutrons are in chlorine-35?
18
200
A .900g sample of potassium-40 was collected. After 55 years .225g of the sample remains. How many half-lives have passed?
2 half-lives
200
200
2KI + Cl2→ 2KCl + I2
single replacement
200
Write the name for PCl3
phosphorous trichloride
200
Have the same # of protons and electrons but different # of neutrons
isotope
300
time required for any specified property (e.g. the concentration of a substance in the body) to decrease by half.
half-life
300
The total # of atoms in 2Al2O3 is
10 atoms
300
CuCl2 + H2S → CuS + HCl
Double Replacement
300
Write the formula for
Al3+ and O2-
Al2O3
300
Has a different # of electrons than protons
( a charged atom)
ion
400
When small nuclei form larger nuclei a large amount of energy is released.
Nuclear Fusion
400
The total # of molecules in 2Al2O3 is
2 molecules
400
NaBr + BaCl2 → NaCl + BaBr2
Decomposition
400
Write the name for CaCl2
calcium chloride
400
Element in Group 7A that gains 1 electron and has mass # of 79.90
Bromine
500
When a Nucleus Splits a large amount of energy is released. 3 neutrons are also released
Nuclear Fission
500
Matter is neither created nor destroyed. It only changes forms.
Law of Conservation of Mass
500
Al2O3 → Al + O2
decomposition
500
Write the name for Cl2O6
dichlorine heptoxide
500
The most reactive metals are found in Group ________ and are named ____________
1A, alkali metals