Este test está cronometrado.
Tienes 10 minutos para completar 10 preguntas de este test.
How many covalent bonds does Carbon form?
None, it does not form covalent bonds.
2
3
4
The structure normally associated with ionic bonding is ...
a giant lattice.
a simple molecule.
a giant molecule.
a regular arrangement of ions surrounded by a sea, or cloud, of electrons.
All the substances listed are solids at room temperature. Which substance has a simple molecular structure?
Sodium
Chlorine
Graphite
Strontium
Magnesium is in group 2 in the periodic table. Which of the following formulae for magnesium compounds is correct?
MgO2
MgO
Mg2O
Mg2O2
Why does sodium chloride not conduct electricity in its solid form?
Ions in its structure are in fixed positions.
It contains no free electrons.
It has a giant covalent molecular structure.
Ions in its structure only have single negative and single positive charges.
Which of the following statements explains why silicon dioxide has a high melting point?
It has a giant ionic structure with strong electrostatic attraction between ions.
It has a giant covalent structure with strong covalent bonds between atoms.
It has a simple molecular structure with weak forces between molecules.
It has a giant metallic structure with a strong attraction between positive ions and the sea of electrons.
Which of the following does not contain ionic bonds?
Sulfur dioxide
Sodium oxide
Silver oxide
Strontium oxide
Statement 1: sodium chloride has a high melting point. Statement 2: ions are arranged in a regular lattice.
Both statements are correct.
Only statement 1 is correct.
Only statement 2 is correct
None of the statements are correct.
Which of the following is not a property of substances with ionic bonding?
High melting point
Crystalline
Conduct electricity in molten state
Conduct electricity in solid state
Which of the following does not contain covalent bonds?
Hydrogen chloride
Sodium chloride
Diamond
