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GCSE Revition > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

Example of an element

A

Oxygen O

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2
Q

Do atoms have the same number of protons and electrons

A

Yes

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3
Q

A student wants to separate soluble sodium chloride from an insoluble calcium carbonate order the steps

A

Add water
Heat water
Filter
And leave to cool to crystallise

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4
Q

Which element is this 2,8,8

A

Argon

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5
Q

Give 2 examples of an endothermic reaction

A

Melting ice
Photosynthesis

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6
Q

Give 2 examples of exothermic reaction

A

Ice pack
Freezing ice

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7
Q

What is an exothermic reaction

A

Taking in heat form surroundings

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8
Q

What is an endothermic reaction

A

To cool the surourodings

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9
Q

Complicate the word equation for sulfuric acid
Sulfuric acid + copper oxide —— + water

A

copper sulfate

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10
Q

Small Covent compound

A

Low melting points
Low bloling points
Do not conduct electristy

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11
Q

Giant Covent compounds

A

High melting points

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12
Q

Group 7 are called

A

Halogens

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GCSE Revition (12 decks)

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