Ionic bonding

Assessment
•
Aijiao Low
•
Chemistry
•
10th Grade
•
3 plays
•
Hard
Student preview

9 questions
Show all answers
1.
MULTIPLE CHOICE
30 sec • 1 pt
what type of elements form ionic bonding?
Answer explanation
By now, you should know the 'staircase' that separates metals and non-metals in the Periodic Table.
2.
MULTIPLE SELECT
1 min • 1 pt
Sodium chloride is an ionic compound formed between element, sodium and chlorine. Select the statements that are true.
Answer explanation
3.
MULTIPLE CHOICE
45 sec • 1 pt
What is the chemical formula of sodium chloride?
Answer explanation
Since the ratio of Na+ ion: Cl- ion is 1: 1, the chemical formula is Na1Cl1. However, you do not need to show "1", hence answer is NaCl.
4.
MULTIPLE CHOICE
1 min • 1 pt
calcium (Ca) atom has an electronic configuration of 2.8.2, whereas fluorine (F) atom has an electronic configuration of 2.7. What is the ratio of Ca:F atoms for ionic bonds to be formed between calcium and fluorine?
Answer explanation
One calcium atom loses two valence electrons to form Ca2+ ion, while each of the two fluorine atoms gain one valence electron to form F- ion.
5.
MULTIPLE CHOICE
30 sec • 1 pt
What is the chemical formula for the compound formed between calcium and fluorine?
Answer explanation
Since the ratio of Ca2+ ion: F- ion is 1: 2, the chemical formula is CaF2.
6.
MULTIPLE CHOICE
1 min • 1 pt
Aluminum (Al) atom has electronic configuration of 2.8.3 , while oxygen (O) atom has electronic configuration of 2.6. What is the ratio of Al:O atoms for the ionic bonds to be formed?
7.
OPEN ENDED
2 mins • 1 pt
Explain how the ionic bonds are formed between aluminium and oxygen.
Hint: the number of atoms of each element that is required to gain / lose how many valence electrons.
8.
MULTIPLE CHOICE
30 sec • 1 pt
What is the formula of the compound formed between aluminum and oxygen?
9.
MULTIPLE SELECT
1 min • 1 pt
Select the physical properties of ionic compound.
Clue: classic example of ionic compounds is sodium chloride.
Answer explanation
Apart from the two correct properties above, ionic compounds should have high melting and boiling points and they are usually insoluble in organic solvents (such as oil).
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