Q.1
Give the formula for oxygen dichloride
  • OCl2
  • O2Cl2
  • OCl
  • O2Cl
Q.2
Silicon dioxide is the compound in sand. What is its formula?
  • SO2
  • NaO2
  • SiO2
  • SiO
Q.3
How many valence electrons are in oxygen, O?
  • 2
  • 7
  • 6
  • 1
Q.4
How many electrons should Carbon have around its Lewis dot structure?
  • 1
  • 3
  • 4
  • 5
Q.5
What is the formula for diphosphorus pentoxide?
  • P2O5
  • PO5
  • P5O2
  • P2O6
Q.6
How many valence electrons does nitrogen have?
  • 3
  • 2
  • 5
  • 1
Q.7
How many valence electrons does hydrogen have?
  • 4
  • 3
  • 2
  • 1
Q.8
Name CCl4
  • carbon carbon tetraiodide
  • carbon tetrachloride
  • monocarbon tetrachloride
  • water
Q.9
Identify the following compound as ionic or covalent: CF4
  • ionic
  • covalent
Q.10
Which formula is for phosphorus trichloride?
  • KCl3
  • PCl3
  • K3Cl
  • P3Cl
Q.11
Write the formula for: dihydrogen monoxide
  • Le
  • H2
  • H2O
  • None of these
Q.12
What is graphene?
  • A sphere shaped structure of carbon atoms
  • Several layers of graphite
  • One layer of graphite
  • A tube shaped layer of carbon atoms
Q.13
Name the following: As2O3 ( Diarsenic Trioxide )
  • True
  • False
Q.14
Name the following: PCl5 ( Phosphorus Pentafluoride )
  • True
  • False
Q.15
If a you saw the following, K+; what does it tell you about the the ion.
  • it has lost one electron
  • it has lost one proton
  • it has lost two electrons
  • it is a negative ion
Q.16
Are the atoms more stable when they are bonded together or when they are apart?
  • Bonded Together
  • Apart
Q.17
A(n) _________ is an ion with a positive (+) charge.
  • anion
  • cation
  • ion
  • solute
Q.18
Fluorine (F₂) is a(n) _________________ molecule because the valence electrons are shared equally between the two fluorine atoms.
  • polar
  • nonpolar
  • ionic
  • crystal
Q.19
When two atoms share electrons, a chemical bond is formed. This type of bond is called:
  • covalent bond
  • ionic bond
  • crystal bond
  • polyatomic bond
Q.20
Which of these are an ion?
  • 3 protons, 3 neutrons, 3 electrons.
  • 8 protons, 8 neutrons, 8 electrons
  • 2 protons, 3 neutrons, 2 electrons
  • 6 protons, 6 neutrons, 7 electrons
0 h : 0 m : 1 s