WorksheetsCovalent Bonds 18BB
Total questions: 14
Worksheet time: 7mins
Which types of atoms make a covalent bond?
Metal and a nonmetal
Nonmetal and a metal
Nonmetal and a nonmetal
Nonmetal and a metalloid
Which one is NOT formed by a covalent bond?
H2O
K2S
I2
CO2
How do covalent bonds form?
Atoms with similar EN transfer valence electrons
Atoms with very different EN share valence electrons
Scientists are still not sure how they form.
Atoms with nearly equal EN share valence electrons
Which element is most likely to form a covalent bond?
Nitrogen
Lithium
Sodium
Potassium
Which of these are NOT a property of covalently bonded compounds?
poor conductors of heat and electricity
stronger than ionic bonds
low melting points
insoluble in water
Why do some elements form Covalent bonds?
Atoms with high EN lose their few valence electrons to atoms with low EN
Atoms with low EN lose their few valence electrons to atoms with high EN
Atoms with nearly equal EN share valence electrons between each other
Atoms with full valence shells spontaneously become electrically charged
Which element will most likely never form a covalent bond?
Carbon
Nitrogen
Phosphorus
Potassium
Atoms with high electronegativity (EN)...
successfully attract and hold electrons in order to bond
can lose their electrons to other atoms
are most often metals
can only share their electrons with other atoms
The covalent bond forms between
a metal and nonmetal
a nonmetal and nonmetal
a metal and metal
2
What is the reason why Noble gases are so stable?
They have an even number of electrons
They have no electrons
They have a full outer shell of electrons
They bond with other atoms
Which of these is not a covalent molecule?
MgO
CO2
HCl
CH4
