Q.1
If an atom has no charge, which of the following must be true?
  • It has more neutrons than protons or electrons.
  • There are only neutrons inside the atom.
  • Its number of protons is equal to its number of electrons.
  • The neutrons in the atom outnumber the electrons and protons.
Q.2
What is the charge of a sodium ion withprotons andelectrons?
  • 1+
  • 1-
  • 2+
  • 2-
Q.3
What does a sodium atom become when it loses its only valence electron?
  • sodium compound
  • sodium atom
  • ionic compound
  • sodium ion
Q.4
Most atoms have no net charge because they have....
  • an equal number of charged and non-charged particles
  • neutrons in their nuclei
  • an equal number of electrons and protons
  • an equal number of neutrons and protons
Q.5
Electrons have a charge of:
  • -1
  • -2
  • +1
  • +2
Q.6
Protons have a charge of:
  • -1
  • +1
  • -2
  • +2
Q.7
What happens when you put an ionic compound in water?
  • The ions separate
  • The ions pack more closely together
  • Nothing happens
Q.8
Generally, atoms form bonds so that _______________.
  • Each atom loses its electrons
  • Each atom has a stable electron configuration
  • Each atom has an unstable electron configuration
  • Each atom gains electrons
Q.9
Generally low melting and boiling points
  • Ionic compounds
  • Covalent compounds
Q.10
Generally high melting & boiling points
  • Ionic compounds
  • Covalent compounds
Q.11
Can be a solid, liquid, or gas at room temperature
  • Ionic compounds
  • Covalent compounds
Q.12
Always a solid at room temperature
  • Ionic compounds
  • Covalent compounds
Q.13
Valence electrons are transferred
  • Ionic bonds
  • Covalent bonds
Q.14
Network of bonded ions
  • Ionic bonds
  • Covalent bonds
Q.15
Poor electrical conductivity
  • Ionic compounds
  • Covalent compounds
Q.16
Molecules
  • Ionic compounds
  • Covalent compounds
Q.17
Conducts electricity well when melted or dissolved
  • Ionic compounds
  • Covalent compounds
Q.18
Valence electrons are shared
  • Ionic bonds
  • Covalent bonds
Q.19
The chemical name of P₄S₁₀ is:
  • phosphorous sulfide
  • phosphorus sulfide
  • tetraphosphorus decasulfide
  • phosphorus (X) sulfide
Q.20
The chemical formula for Bromine monofluoride is:
  • Br1F1
  • BrF
  • Br2F
  • BrF2
0 h : 0 m : 1 s