Lesson 2: Ionic equations Flashcards

1
Q

What do ionic equations show?

A
  • Ionic equations show the ions involved in a reaction.
    They only show particles that have changed
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2
Q

What are “spectator ions”?

A
  • Spectator ions are on both sides of an equation.
    They haven’t changed
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3
Q

What are the steps to writing an ionic equation?

A

1.) Balance the equation
2.) Split ionic compounds into ions.
3.) Cancel out spectator ions
4.) Write net equation

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4
Q

When are ionic compounds formed ?

A

When non - metals react with metals.

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5
Q

What are polyatomic ions?

A
  • Ions that consist of more than 1 type of atom.
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6
Q

What are monoatomic ions?

A
  • Ions that consist of one type of atom.
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7
Q

How do particles change in chemical reactions?

A
  • Particles change by gaining/ losing electrons.
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8
Q

What is the ionic formula for “hydroxide?”

A

OH⁻

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9
Q

What is the ionic formula for “nitrate”?

A

NO₃⁻

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10
Q

What is the ionic formula for “ammonium”?

A

NH₄⁺

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11
Q

What is the ionic formula for “sulphate”?

A

SO₄²⁻

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12
Q

What is the ionic formula for “carbonate”?

A

CO₃²⁻

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13
Q

What is the ionic formula for “phosphate”?

A

PO₄³⁻

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14
Q

What 2 things make an ionic equation balanced?

A
  • Same overall charge
  • Number of atoms on each side
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15
Q

How is the “net ionic equation” achieved?

A
  • You must cancel out spectator ions.
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16
Q

Which ionic compounds are split into their ions?

A
  • Soluble ionic compounds.
  • State symbol (aq)
17
Q

What type of ionic compounds do you split into their ions?

A
  • You split AQUEOUS ionic compounds into their ions.
18
Q

Which substance here is a precipitate?
NaCl (aq) + AgNO₃(aq) —> AgCl (s) + NaNO₃ (aq)
How do you know?

A
  • AgCl (s) because it is a solid product.
19
Q

Why does potassium iodide solution conduct electricity? (1)

A
  • It conatains ions which can move.