Name:______
Organic Bell Ringers Part 3 – Show all Work
5/9/11 – Equilibrium Review Empirical Formula Redo! HW: Hydrates Summary
When 5.00 g of FeCl3●nH2O are heated, 2.00 g of H2O are driven off. Find the chemical formula and the name of the hydrate.
In a biochemical reaction, an enzyme acts as a catalyst, causing the
(1) activation energy of the reaction to decrease
(2) potential energy of the reactants to decrease
(3) kinetic energy of the reactants to increase
(4) heat of reaction to increase
5/10/11 – Macromolecules HW: Define the following (you may use some of the vocabulary definition you have acquired)
Polymer
Amino Acid
Protein
Lipid
Carbohydrate
Nucleic Acid
Glucose
Chemical Bond
Dehydration
Polypeptide
Polysaccharide
Monosaccharide Nucleotide
Glycerol
Fatty Acid
According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas?
(1) The force of attraction between the gas particles is strong.
(2) The motion of the gas particles is random and straight-line.
(3) The collisions between the gas particles cannot result in a transfer of energy between the particles.
(4) The separation between the gas particles is smaller than the size of the gas particles themselves.
Explain
A beaker contains both alcohol and water. These liquids can be separated by distillation because the liquids have different ______.
(1) boiling points (2) densities (3) particle sizes (4) solubilities
5/11/11 – Functional Groups HW: Macromolecules WS due Friday
Which term is defined as a measure of the average kinetic energy of the particles in a sample of matter?
(1) activation energy (2) potential energy (3) temperature (4) entropy
The activation energy of a chemical reaction can be decreased by the addition of ______
(1) a catalyst (2) electrical energy (3) an indicator (4) thermal energy Draw PE and Time diagram of a reaction
This compound is classified as an ______
(1) aldehyde (2) amine (3) ester (4) organic acid
Which salt is produced when sulfuric acid and calcium hydroxide react completely?
(1) CaH2 (2) CaO (3) CaS (4) CaSO4
5/12/11 – DNA Structure Lab HW: Finish Lab Questions
Why can an increase in temperature lead to more effective collisions between reactant particles and an increase in the rate of a chemical reaction?
(1) The activation energy of the reaction increases.
(2) The activation energy of the reaction decreases.
(3) The number of molecules with sufficient energy to react increases.
(4) The number of molecules with sufficient energy to react decreases.
Name three other factors that can increase effective collisions
Which substance is always a product when an Arrhenius acid in an aqueous solution reacts with an Arrhenius base in an aqueous solution?
(1) HBr (2) H2O (3) KBr (4) KOH
A compound has the empirical formula CH2O and a gram-formula mass of 60. grams per mole.
What is the molecular formula of this compound?
(1) CH2O (2) C2H4O2 (3) C3H8O (4) C4H8O4
Which quantity of heat is equal to 200. joules?
(1) 20.0 kJ (2) 2.00 kJ (3) 0.200 kJ (4) 0.0200 kJ
5/13/11 – Equilibrium, Organic, Vocabulary Quiz HW: Specific Heat Practice
The liquids hexane and water are placed in a test tube. The test tube is stoppered, shaken, and placed in a test tube rack. The liquids separate into two distinct layers because hexane and water have different
(1) formula masses (2) molecular polarities (3) pH values (4) specific heats
Which nuclear emission has the greatest mass and the least penetrating power?
(1) an alpha particle (2) a beta particle (3) a neutron (4) a positron
In which type of reaction do two lighter nuclei combine to form one heavier nucleus?
(1) combustion (2) reduction (3) nuclear fission (4) nuclear fusion
What is the molarity of 1.5 liters of an aqueous solution that contains 52 grams of lithium fluoride, LiF,