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Chemical Bonds (Grade 9)

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Chemical Bonds

1. 
A covalent bond forms when
  1. opposite ions attract
  2. protons are shared between atoms
  3. an electron is transferred from one atom to another
  4. two atoms share a pair of electrons
 
2. 
Which type of chemical bond forms when electrons are either gained or lost by an atom?
  1. ionic
  2. covalent
  3. metallic
  4. Van Der Waals
3. 
The number of valence electrons in an atom of an element determines many properties of the element, including the ways in which the atom can bond with other atoms.
  1. True
  2. False
 
4. 
Which type of attractive force is weak and occurs as a result of the attractions between differently-charged portions of atoms and nonpolar molecules?
  1. ionic
  2. covalent
  3. metallic
  4. Van Der Waals
5. 
In general, the interparticle forces in covalent compounds are                      those in ionic compounds.
  1. multiples of
  2. the same strength of
  3. stronger than
  4. weaker than
 
6. 
A compound composed of electrically charged atoms is called a(an)
  1. octet compound
  2. chemically stable compound
  3. ionic compound
  4. covalent compound
7. 
Chemical bonds formed when electrons move freely from one atom to another are:
  1. ionic
  2. covalent
  3. metallic
  4. van der Waals
 
8. 
A substance made up of a combination of two or more elements held together by chemical bonds that can not be separated by physical means.
  1. Dilute
  2. Neutron
  3. Compound
9. 
What type of ion forms when an atom loses electrons?
  1. Neutral
  2. Positive
  3. Negative
  4. Possible positive or negative
 
10. 
Acidic solutions contain high concentrations of
  1. H+ ions
  2. OH- ions
  3. water
  4. oxygen
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