Topic 5 Ionic Bonding Flashcards Preview

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Flashcards in Topic 5 Ionic Bonding Deck (15):
1

What are cations?

Positive ions

2

What are anions?

Negative ions

3

How and why do ions form?

2 reactants in a solution react and either loos or gain electrons depending on their group, so that they have a complete outer shell of electrons, changing their charge

4

What is different about an atom and an ion?

An atom has 0 charge, an ion has charge An atom has the same number of protons and electrons, an ion doesn’t

5

What is special about group 4 ions?

They can either be anions or cations

6

What does -ide and -ate at the end of a compound name mean?

-ate means that there is oxygen in it, -ide means it is pure

7

What is the formula for the sulphate ion

SO42-

8

What is the formula for the chloride ion

Cl-

9

what is the fromula for the hydroxide ion

OH-

10

what is the fromula for the nitrate ion

NO3-

11

what is the formula for the carbonate ion?

CO32-

12

how are ionic compounds held together?

the electromagnetic attraction between the negatively charged and the possitively charged ions holds the ionic compounds together

13

what are the properties of ionic compounds?

  • high meltingpoint
  • soluble in water
  • does not conduct as a solid
  • conducts as a liquid or in solution

14

why do ionic compounds have high melting and boiling points?

it takes a lot of energy to overcome the strong electromagnetic forces and seperate the ions

15

why do ionic ompounds conduct electricity when liquid?

ionic compounds conduct electricity when liquid because the chargd ions can move and carry the charge through the liquid