Chem 12 Question Flashcards
What is a substitution reaction?
A reaction where AB + CD ——-> AC + BD.
What is a synthesis reaction?
A reaction where two or more simple compounds combine to form a more complicated compound.
What is a cracking reaction?
A reaction where a compound splits into different products.
What is polymerization?
The process of reacting monomer molecules together in a chemical reaction to form a polymer.
What is a combustion reaction?
A reaction where oxygen combines with another compound to form water and carbon dioxide, and is exothermic because it produces heat.
Which compound has the largest dipole moment?
Cis ClCH=CHCl.
How to identify acids and bases?
C2H5OH - base, CH3OCH3 - base, CH3CH2COOH - acid, CH3COCH3 - base.
What is the normality of an acid solution if 50mL of the solution requires 48.61mL of 0.1879 N alkali for neutralization?
N = (48.61mL x 0.1879N)/50mL = 0.1827.
What is the density of a substance that floats in water?
It has a lower density than water (1g/mL = 1000kg/L).
How to calculate the average atomic mass of an element with three isotopes?
(23.9924 x 0.786) + (24.9938 x 0.101) + (25.9898 x 0.113) = 24.32g.
What do oxides of non-metals with water form?
They form acids, while oxides of metals with water form bases.
How to find which two samples are of the same compound?
Look for the sample that is a multiple of another sample.
How to calculate the final temperature of water and metal when placed together?
Tf = 2369.82 / 84.59 = 28°C.
What is the specific heat of water?
1 cal/g°C = 4.186J/g°C.
What is Graham’s Law?
r1/r2 = (MM2/MM1)^1/2, where MM = molar mass.
