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CHEMISTRY 12 > Compounds, formulae and equations > Flashcards

Compounds, formulae and equations Flashcards

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1
Q

How does a product form in a chemical reaction?

A

When a chemical reaction occurs, no atoms are created or destroyed. The atoms in the reactants rearrange to form the products

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2
Q

What does aqueous mean?

A

Dissolved in water

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3
Q

What are ionic equations?

A

They can be written for an reaction involving ions in solution, where only the reacting ions and the products they form are included

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4
Q

What is a binary compound?

A

A compound that contains two elements only

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5
Q

How do you name a binary compound?

A

The name of first element and the name of second element with ending - ide

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6
Q

What is a polyatomic ion?

A

An ion that contains more than one element bonded together

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7
Q

How are ions created?

A

When electrons are transferred from one atom to another these ions attract each other due to their opposite charge to form ionic compounds

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8
Q

What kind of ions do group 1 metals form?

A

+1

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9
Q

What kind of ions do group 2 metals form?

A

+2

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9
Q

What kind of ions do group 3 metals form?

A

+3

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10
Q

What kind of ions do group 5 metals form?

A

-3

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11
Q

What kind of ions do group 6 metals form?

A

-2

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12
Q

What kind of ions do group 7 metals form?

A

-1

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13
Q

What is the formula of a nitrate ion?

A

NO3 -

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14
Q

What is the formula of a sulphate ion?

A

SO4 2-

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15
Q

What is the formula of a carbonate ion?

A

CO3 2-

16
Q

What is the formula of an ammonium ion?

A

NH4 +

17
Q

What is the formula of a zinc ion?

A

Zn 2+

17
Q

What is the formula of a silver ion?

A

Ag +

18
Q

What is the standard reaction between a metal hydroxide and acid?

A

Salt + water

19
Q

What are spectator ions?

A

Ions that don’t take part in the reaction
- They remain the same on both sides of the chemical equations

20
Q

What is the standard ionic equation for neutralisation?

A

H+ (aq) + OH- (aq) -> H20 (l)

21
Q

What are hydrous salts?

A

Salts with water content in them

22
Q

What are anhydrous salts?

A

Salts without water content in them

23
Q

What should the overall charge in an ionic compound be?

A

0 so the charges must balance
- The sum of the positive charges= the sum of the negative charges

24
Q

Do covalent compounds contain ions?

A

They don’t containn ions
- Most covalent compounds exist as molecules with small number of atoms bonded together

CHEMISTRY 12 (19 decks)

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