Test-Questions.com
Home / HESI Chemistry / Test 04

Q:1-In a redox reaction, the element that is oxidized _____ an electron and the element that is reduced _____ an electron.
Mark one answer:
gains, loses
loses, gains
loses, loses
gains, gains

Q:2-What characteristic of an element determines its specific isotope?
Mark one answer:
Number of protons.
Number of neutrons.
Number of electrons.
Number of quarks.

Q:3-The addition of a catalyst to a chemical reaction will have what effect?
Mark one answer:
Increase the energy required for the reaction to take place
Increase the time required for the reaction to take place
Increase the rate at which the reaction takes place
Reduce the amount of products in the reaction

Q:4-What is the basic structure of an amino acid?
Mark one answer:
An amine group, a carboxyl group, and a functional R-group.
An amine group, a polar side chain, and a non-polar side chain.
An amide group, an alcohol group, and a functional R-group.
An amine group, and an amide group.

Q:5-A concentration of 120.9132 g of MgO in 3 L of solution will be what molality? (The atomic weight are: Magnesium: 24.305 g/mol, Oxygen: 15.9994 g/mol)
Mark one answer:
0.5 mol MgO
1.0 mol MgO
1.5 mol MgO
2.0 mol MgO
test-questions.com

Q:6-Polarity is based on the difference in:
Mark one answer:
electronegativity values for the elements involved in the bond.
atom number for the elements involved in the bond.
concentrations of the elements involved in the bond.
quantities of the elements involved in the bond.

Q:7-In a complete combustion reaction involving adequate amounts of oxygen and a compound containing carbon and hydrogen, the products are always?
Mark one answer:
carbon monoxide and oxygen
carbon dioxide and water
heat and water
carbon dioxide and heat

Q:8-Between which two molecules is a phosphodiesterase bond?
Mark one answer:
Two sugars
Two amino acids
Two ammonium molecules
PO4 and another molecule

Q:9-A chemical bond is determined primarily by what particles?
Mark one answer:
Neutrons
Protons
Quarks
Electrons

Q:10-Which of the following correctly describes the oxidation state of the sulfur atom in sulfuric acid?
Mark one answer:
+5
+6
+7
+8

How to Study for Your Test: