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WorksheetsChemical Bonds
Total questions: 25
Worksheet time: 18mins
Why do elements bond?
To be friends
To create a new element
To become stable
To get bigger
Which of the following describes covalent bonds?
Bonds form because of opposite charges
electrons are shared to fill outer electron shells
Electrons are transferred between atoms
Covalent bonds are magical
The octet rules states that most elements want to have _____ valence electrons.
2
4
6
8
For representative elements (Groups 1A - 8A), the number of valence electrons is equal to
the group number
the period number
the atomic number
the group number minus 10
For metals (groups 1-3), its easier to _____ electrons to have a full outer shell.
gain
lose
share
For nonmetals (grousp 5-7), its easier to _____ electrons to have a full outer shell.
gain
lose
share
Which type of bond has an unequal sharing of electrons between two atoms?
nonpolar covalent
polar covalent
ionic
mettalic
Which element has a lower electronegativity value?
Calcium
Barium
What does electronegativity do as you go across a period?
decrease
no pattern
stay the same
increase
Which bond shares electrons evenly?
non polar Covalent
Polar Covalent
Ionic
Which of the following statement is correct?
Polar covalent bond and non-polar covalent bond involves equal sharing of electrons
Polar covalent bond and non-polar covalent bond involves unequal sharing of electrons
Polar covalent bond and non-polar covalent bond involves transferring of electrons
Polar covalent bond involves unequal sharing of electrons while non-polar covalent bond involves equal sharing of electrons
Given the electronegativity value; Q=0.8, R = 1.0, S = 3.0, T = 3.4, which pair of atoms has the highest tendency to form covalent bond?
S and R
T and S
R and T
Q and S
