WorksheetsDiagnostic Test
Total questions: 10
Worksheet time: 32mins
Q: In chemical compound, covalent bond forms when?
the electronegativity difference between two atoms is very large.
electrons are completely transferred between two metals.
pairs of electrons are shared between two nonmetals atoms.
two nonmetal atoms are attracted to each other by opposite charges.
Q: The atomic number of an element tells you what about the element?
number of ions
number of valence electrons
number of electrons
number of protons
Q: Balance the following reactions:
Mg(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
1, 2, 1, 2
2, 1, 1, 2
1, 2, 2, 2
1, 2, 1, 1
Q: Using the balance equation in the previous question,
MgCl(s) + HCl (aq) --> MgCl₂(aq) + H₂(g)
How many grams of HCl are consumed by the reaction of 2.50 moles of magnesium?
5.00 g
7.29 g
218 g
182 g
Q: Using the balanced equation from the previous equation,
MgCl(s) + HCl(aq) --> MgCl₂(aq) + H₂(g)
How many moles of HCl are consumed in the production of 7.5 moles of MgCl₂?
15 moles
3.8 moles
7.5 moles
23 moles
Q: Dipole-dipole attractions occur between polar molecules. Which of these molecules is polar?
H₂
CH₄
HCl
BH₄
Q: Lewis structure for acetone is shown below. What type of intermolecular forces will be present between the molecules of acetone in a pure sample of acetone? Select all that apply.
ion-dipole interactions
dipole-dipole interactions
hydrogen bonding
London forces
Q: Which numbered arrow in the image above points to a hydrogen bond?
1
2
3
4
Q: How do the following elements bond together? Al⁺³ and O²⁻
What is the name of the compound formed?
Al₃O₂,
Aluminum oxide
Al₃O₂,
Trialuminum dioxide
Al₂O₃,
Aluminum oxide
Al₂O₃,
Trialuminum dioxide
Q: Ionic Bonding involves:
transfer of protons
transfer of electrons
transfer of neutrons
sharing electrons
