Atoms
Periodic Table
Bonding/Naming
Balancing/Mass
Calculations
100
Who discovered protons?
Rutherford
100
On the Periodic Table, what can you look at to determine the number of protons?
The atomic number
100
What type of bond shares electrons?
Covalent
100
K2SO4 (aq) + Ba(NO3)2 (aq) -> BaSO4 (s) + KNO3 (aq)
1, 1, 1, 2
100
How many protons does Chlorine have?
17
200
What did the gold-foil experiment tell us?
That an atom is mostly empty space and has a positive charge.
200
What is mass number?
The number of protons plus neutrons
200
What is the formula for Dinitrogen Trioxide?
N2O3
200
K2SO4 (aq) + Ba(NO3)2 (aq) -> BaSO4 (s) + KNO3 (aq)
What type of reaction is this?
Double replacement
200
A neutron
300
What did the bohr model tell us?
That electrons are found on orbitals around the nucleus.
300
What type of element is Iodine?
A halogen
300
What is the correct formula for Potassium Nitrate?
KNO3
300
CO2 + KOH -> K2CO3 + H2O
Balance the equation
1, 2, 1, 1
300
Isotope A of an element has a mass of 62.930 amu and an abundance of 69.17%. Isotope B has a mass of 64.928 amu and an abundance of 30.83%. Calculate the average atomic mass of this element.
63.55 amu
400
Who discovered the plum-pudding model?
Thomson
400
Where on the periodic table would you find the Alkali Metals?
Group 1
400
What properties would this compound have: CH4.
Covalent
Low melting point
Poor Conductors
Definite molecular shape
400
What is the mass of 1.12 x 1024 molecules of SO3?
148.9 g SO3
400
In the chemical equation:
CO2 + 2 KOH -> K2CO3 + H2O
How many moles of CO2 are needed to exactly react with 1.24 moles of KOH?
0.62 moles CO2
500
Who is the first "scientist" to discover atoms?
Democritus
500
Two part question: What element is the least electronegative? What element has the smallest atomic radius?
Least e- = Fr
Smallest atomic radius = He
500
What type of bond would Iron and Oxygen have? If Iron had a charge of 3, then what would the formula be?
Ionic
Fe2O3
500
Calculate the molar mass of magnesium acetate, Mg(C2H3O2)2.
142.41 g/mol 41 Mg(C2H3O2)2.
500
During our titration, we determined the concentration of the unknown acid by using the formula MV = MV. What would be the concentration of HCl if we used 30 mL of a 0.5 M NaOH into 50 mL of the acid?
0.3 M HCl