Atomic Theory
Ionic Formulas
Covalent Formulas
Balancing Reactions
Balancing Word Equations
Miscellaneous
100
The atomic mass is equal to the number of _____ plus ______ .
protons plus neutrons
100
Ionic compounds are formed between _____ and non-metals
metals
100
Covalent compounds are formed between ______ and non-metals
non-metals
100
__Na + __Cl2 -> __NaCl
2Na + Cl2 -> 2NaCl
100
Sodium Hydroxide + Hydrogen Chloride ->
Sodium Chloride + waterNaOH + HCl -> NaCl + H2O
100
What is the most abundant element in the Earth's crust? (the ground, rocks, mountains, etc.)
Oxygen
200
How does an atom become an ion?
By gaining or losing electrons
200
Write the formula of: Sodium Chloride
NaCl
200
Write the formula of: Sulfur Hexafluoride
SF6
200
__Ca + __P4 -> __Ca3P2
6Ca + P4 -> 2Ca3P2
200
Lithium + Fluorine -> Lithium Fluoride
2Li + F2 -> 2LiF
200
What is the most abundant element in the human body?
Oyxgen
300
A Lewis dot diagram shows the atomic symbol surrounded by the _______ electrons
valence
300
Write the formula of: Calcium Chlorite
Ca(ClO2)2
300
Write the formula of: dinitrogen pentoxide
N2O5
300
__C2H6 + __O2 -> __CO2 + __H2O
2C2H6 + 7O2 -> 4CO2 + 6H2O
300
Copper (II) Chloride + Aluminum
-> Aluminum Chloride + Copper
3CuCl2 + 2Al -> 2AlCl3 + 3Cu
300
What is the most abundant element in the atmosphere? (the air)
Nitrogen
400
A Bohr diagram shows the electrons in each shell, surrounding the _______ which contains the protons and neutrons
nucleus
400
State the name of: NiAs
Nickel (III) Arsenide
400
State the name of: CO
Carbon Monoxide
400
__Na2CO3 + __HCl -> __NaCl + __H2O + __CO2
Na2CO3 + 2HCl -> 2NaCl + H2O + CO2
400
Potassium Chlorate -> Potassium Chloride + Oxygen
2KClO3 -> 2KCl + 3O2
400
What is the most abundant element in the Universe?
Hydrogen
500
In the Lewis diagram below, how many shared pairs of electrons are there, and how many lone pairs?
three shared pairs, one lone pair
500
State the name of: Co(CO3)
Cobalt (II) Carbonate
500
State the name of: Si3N4
trisilicon tetranitride
500
__Al(OH)3 + __H2SO4 -> __Al2(SO4)3 + __H2O
2Al(OH)3 + 3H2SO4 -> Al2(SO4)3 + 6H2O
500
Nitrogen Trihydride + Oxygen ->
Nitrogen Monoxide + Water
4NH3 + 5O2 -> 4NO + 6H2O
500
What is the most abundant element in the Earth? (the entire thing)
Iron