Font size
WorksheetsChemical Bonds
Total questions: 25
Worksheet time: 50mins
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 metals (groups 1-3), its easier to _____ electrons to have a full outer shell.
gain
lose
share
Which is not true of the chemical bond shown on the diagram?
An electron from Na is transferred to Cl.
The bond is ionic since electron is shared by the two atoms.
A metal and a non-metal are involved in the bonding.
Na will become positively charged and Cl will be negatively charged.
Which two statements are correct about the figure shown?
It is a covalent bond.
Hydrogen atoms loss electrons and Carbon gains the atoms.
It happens on metal and on another non-metal.
The valence electrons are shared by both atoms.
Which two are ionic compounds?
NaCl
HCl
CH4
CaO
Diagram 3 shows the electron arrangement of calcium oxide.
Which of the following is correct about calcium oxide?
Calcium atom shares electrons with oxygen atom
Calcium atom transfer electron to oxygen atom
Oxygen atom releases electron
Calcium atom receives electron
