Atomic Makeup
Significant Figures
Balancing Chemical Reactions
Stoichiometry and Limiting Reactants
Nuclear Chemistry
100
The majority of the mass of an atom is in this part of the atom.
What is the nucleus?
100
Number of significant figures in 10.83 m.
What is 4 sig figs?
100
H2 + O2 --> H2O
What is 2H2 + O2 --> 2H2O?
100
2KI + MgCl2 --> 2KCl + MgI2
1 mol of KI and plenty of MgCl2 will make this amount of MgI2 (mol).
What is 0.5 mol of MgI2?
100
Notation for alpha particle
What is 42He?
200
The subatomic particle that has a charge of -1.
What is an electron?
200
Number of significant figures in 0.021 seconds.
What is 2 sig figs?
200
NaF + MgCl2 --> NaCl + MgF2
What is 2NaF + MgCl2 --> 2NaCl + MgF2?
200
2KI + MgCl2 --> 2KCl + MgI2
76.4g of MgCl2 & plenty of KI will make this amount of KCl (mol).
What is 1.60 mol of KCl?
200
What needs to be balanced in a nuclear reaction?
What are atomic number and mass number?
300
The subatomic particle that determines what element an atom is.
What is the proton?
300
(5.79 m + 42.6 m) / 7.230 s
What is 6.69 m/s?
300
H3PO4 + KOH --> K3PO4 + H2O
What is H3PO4 + 3KOH --> K3PO4 + 3H2O?
300
2KI + MgCl2 --> 2KCl + MgI2
76.4g of MgCl2 & plenty of KI will make this amount of MgI2 (grams).
What is 223 grams of MgI2?
300
Iron-55 decays through electron capture. Write the nuclear reaction.
What is 5526Fe +-1e --> 5525Mn?
400
Selenium-77 has this number of neutrons.
What is 43 neutrons?
400
Joe completed the marathon in 180 minutes. How many seconds did Joe take?
What is 11000 seconds?
400
Ca(ClO3)2 + KI --> CaI2 + KClO3
What is Ca(ClO3)2 + 2KI --> CaI2 + 2KClO3?
400
2KI + MgCl2 --> 2KCl + MgI2
500g of KI & 800g of MgCl2 react. Identify the limiting reactant.
What is KI?
400
Carbon-14 decays through beta particle emission. Write the nuclear reaction.
What is 146C --> -1e + 147N?
500
Iodine-127 with a net charge of -1 has this number of electrons.
What is 54 electrons?
500
Measure the amount of water in the graduated cylinder (mL):
What is 10.73 mL?
500
C5H12 + O2 --> CO2 + H2O
What is C5H12 + 8O2 --> 5CO2 + 6H2O?
500
2KI + MgCl2 --> 2KCl + MgI2
300.g of KI & 150.g of MgCl2 react. Determine amount of KCl made (grams).
What is 134g of KCl?
500
23592U +10n --> 8735Br + ____ + 310n
What is 14657La?