Chemical Bonding
Chemical Formulas & Compounds
Chemical Equations & Reactions
Stoichio-metry
Wild Card
100
What type of bonding would be expected between these atoms: Hydrogen and Fluorine
Ionic bonding
100
In a polyatomic ion, the algebraic sum of the oxidation numbers of all atoms is equal to _____.
the charge of the ion
100
To balance a chemical equation, it is permissible to adjust the ____________.
coefficients
100
If a chemist claculates the maximum amount of product that could be obtained in a chemical reaction, he or she is calculating the _____________.
theoretical yield
100
Define covalent bonding
Bonding resulting from the sharing of electron pairs between two atoms.
200
State the octet rule
Chemical compound tend to form so that each atom, by gaining, losing, or sharing electrons, has an octet of electrons in its highest occupied energy levels (or something to that effect).
200
What is the formula for silicon dioxide?
SiO2
200
In a reaction, the ions of 2 compounds exchange places in aqueous solution to form 2 new compounds. This reaction is called a ___________________.
double-replacement reaction.
200
For the following reaction, what are all possible mole ratios? 2HgO --> 2Hg + O2
2 mol HgO: 2 mol Hg 2 mol HgO: 1 mol O2 2 mol Hg: 2 mol HgO 2 mol Hg: 1 mol O2 1 mol O2: 2 mol HgO 1 mol O2: 2 mol Hg
200
List two properties of metals that are due to metallic bonding.
Malleability and Ductility
300
Define polyatomic ion
A charged group of covalently bonded atoms.
300
What is the name for the following compound using prefixes? CCl4
carbon tetrachloride
300
What are three observations that indicate a chemical change may be taking place?
formation of a precipitate evolution of heat and light production of a gas
300
For the reaction 2Fe + O2 --> 2FeO, how many grams of iron oxide will be produced from 8.00 mol of iron?
575g FeO
300
What is the scientific principle that dicates that equations must be balanced?
The law of conservation of mass
400
A covalent bond in which the bonded atoms have an unequal attraction for the shared electrons is called a __________
Polar (polar-covalent) bond
400
Write the formula and give the name of the compound formed from these ions: Ca 2+ and Cl -
CaCl2 calcium chloride
400
Give the general equations for synthesis and decomposition reactions.
synthesis A + X --> AX decomposition AX --> A + X
400
For the reaction Cl2 +2KBr --> 2KCl + Br2, How many moles of KCl are produced from 119 g of KBr?
1.00 mol of KCl
400
Give the correct mathematical expression for determining percent yield.
Percent Yield = acutal yield/theoretical yield x 100
500
What is the formula unit of aluminum oxide?
Al2O3
500
Name thel following ion.
CN -
500
Balance this equation and identify which type of reaction it is: Al + Fe2O3 --> Al2O3 + Fe
2Al + Fe2O3 --> Al2O3 + 2Fe Single-replacement reaction
500
For the reaction 2KClO3 --> 2KCl + 3O2, how many grams of KClO3 are required to produce 160 g of oxygen?
409 g KClO3
500
What is the molar mass of C6H12O6?
180.18 g
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