WorksheetsWriting Chemical Formula
Total questions: 10
Worksheet time: 4mins
Chemical compound is formed when two or more ions are formed.
True
False
Choose the incorrect pairing below:
Cation -> positive
Anion -> negative
Ionic bonding -> metal to metal
Covalent bonding -> nonmetal to nonmetal
It is composed of two or more atoms bound together by a chemical bond.
Ion
Molecule
Atom
Element
An atom must have how many valence electrons to become stable?
6
8
10
12
Which is positive ion?
Cation
Anion
Which is negative ion?
Cation
Anion
What is the first step in writing a chemical formula?
Write the multipliers as subscript of each element.
Identify the symbols and charges of the elements.
Balance the charges by looking for multipliers.
What is the correct chemical formula of sodium oxide?
Na2O
NaO2
Carbon atom has 6 valence electrons. How many VE does it need to become stable?
2
4
6
8
What is the second step in writing a chemical formula?
Write the multipliers as subscript of each element.
Balance the charges by looking for multipliers.
Identify the symbols and charges of the elements.
