Writing Formulae (Grade 10 NSC Matric Physical Sciences): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
ShowHide
Practise the questions
10 questions from this quiz
What are polyatomic ions?
What are polyatomic ions?
Groups of atoms with a charge acting as one
What is the charge on the sulphate ion?
What is the charge on the sulphate ion?
2-
Which term is used for ionic compounds when calculating mass?
Which term is used for ionic compounds when calculating mass?
Formula mass
When should relative molecular mass be used?
When should relative molecular mass be used?
For covalent compounds forming molecules
What is the relative molecular mass of (N=14.0, H=1.01)?
What is the relative molecular mass of (N=14.0, H=1.01)?
17.03
How do ionic compounds differ structurally from covalent compounds?
How do ionic compounds differ structurally from covalent compounds?
Ionic form crystal lattices; covalent form molecules
Which compound is ionic?
Which compound is ionic?
What is the first step in writing formulae with polyatomic ions?
What is the first step in writing formulae with polyatomic ions?
Identify the cation and anion
When should brackets be used in a chemical formula?
When should brackets be used in a chemical formula?
When a polyatomic ion appears >1 time
What does a formula unit represent in ionic compounds?
What does a formula unit represent in ionic compounds?
The simplest ratio of ions