Diagrams and Formulas (Leaving Cert Chemistry): Quizzes
📚Quizzes
Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
What do Lewis diagrams show in ionic bonding?
What do Lewis diagrams show in ionic bonding?
How electrons are transferred
In Lewis diagrams, what represents electrons from different atoms?
In Lewis diagrams, what represents electrons from different atoms?
Dots and crosses
What charge does the magnesium ion have in ?
What charge does the magnesium ion have in ?
What do metals do with electrons in ionic bonding?
What do metals do with electrons in ionic bonding?
Lose electrons to form cations
How do ionic compounds exist in their solid form?
How do ionic compounds exist in their solid form?
As crystal structures
In NaCl crystal, how many chloride ions surround each sodium ion?
In NaCl crystal, how many chloride ions surround each sodium ion?
6
What key principle ensures correct ionic formulas?
What key principle ensures correct ionic formulas?
Total positive = total negative
Which ion is written first in an ionic compound formula?
Which ion is written first in an ionic compound formula?
Metal (positive ion)
What is the formula for aluminium oxide?
What is the formula for aluminium oxide?
What are polyatomic ions?
What are polyatomic ions?
Groups of atoms with overall charge
Which polyatomic ion carries a positive charge?
Which polyatomic ion carries a positive charge?
(ammonium)
When must you use brackets around a polyatomic ion in a formula?
When must you use brackets around a polyatomic ion in a formula?
When you need more than one of them
What does variable valency mean for transition metals?
What does variable valency mean for transition metals?
They form ions with different charges