Module 2.1.2 - Compounds, formulae and equations Flashcards by amy h

Q

What type of ions do metals form?

A

Positive

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Q

What type of ions do non-metals form?

A

Negative

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Q

What do positive ions usually end in?

A

-ium

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Q

What do negative ions usually end in?

A

-ide, -ate, -ite

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Q

What does ’-ate’ and ’-ite’ mean?

A

Contains oxygen

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Q

What does ’-ide’ mean?

A

One element only

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Q

What ions do metals in group 1 form?

A

1+ ions

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Q

What ions do metals in group 2 charge?

A

+2

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Q

What ions do non-metals in group 7 form?

A

1-

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Q

What ions do non-metals in group 6 form?

A

2-

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Q

What can transition metals form?

A

Positive ions of variable charge

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Q

What are compound ions?

A

Contain more than one element

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Q

What is the charge of ammonium (NH4)

A

+1

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Q

What is the charge on a silver ion?

A

+1

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Q

What is the charge on a zinc ion?

A

2+

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Q

What do roman numerals show?

A

Provide the positive charge

Q

What is the charge on hydroxide ion (OH)

A

1-

Q

What is charge on nitrate (V), NO3?

A

1-

Q

What is charge on manganate (VII), MnO4?

A

1-

Q

What is charge on hydrogencarbonate HCO3?

A

1-

Q

What is charge on hydrogensulfate, HSO4?

A

1-

Q

What is charge on carbonate, CO3?

A

2-

Q

What is charge on sulfate (VI), SO4?

A

2-

Q

What is charge on sulfate (IV), SO3?

A

2-

Q

What is charge on dicchromate (VI), Cr2O7?

A

2-

Q

What is charge on phosphate, PO4?

A

3-

Q

How do you write a balanced chemical equation?

A

Write the equation in words
Put in all state symbols and chemical formula
Balance the equation (trial and error)

Q

What are the state symbols?

A

(s) solid
(l) liquid
(g) gas/gaseous
(aq) aqueous

Q

What does aqueous mean?

A

The substance is completely dissolved in water