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Chemical Changes

chemical-changes

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195588

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Strong acids

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completely as all particles

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and so they are

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reactive than weak acids.

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Weak acids don't ionise

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as the ionisation reaction is a

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one, and so an

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is created between the undissociated and

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particles.

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Match the increase/decrease of concentration of H+ ions to the change in pH

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From pH 7 to pH 4
from pH 5 to pH 4
from pH 5 to pH 7
from pH 6 to pH 4
from pH 1 to pH 5

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x 10
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x1000
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x 100

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Concentration is how

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an acid is. Whereas strength is what proportion of the molecules

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pH

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as concentration

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Which of the following are bases?

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Match the reactants to the products

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Acid + Metal Oxide
Acid + Metal Hydroxide
Acid + Metal Carbonate
Acid + Metal
Metal + Water
Acid + Insoluble Base

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Salt + Water + Carbon Dioxide
Salt + Water
Metal Hydroxide + Hydrogen
Salt + Water
Soluble Salt
Salt + Hydrogen

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Put these elements in order of the reactivity series from highest to lowest

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Iron
Sodium
Calcium
Zinc
Magnesium
Potassium
Copper
Hydrogen
Lithium
Carbon

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The higher the metal in the

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the hmore easily they form

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positive ions

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When separating metals from metal oxides, oxidation is

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and reduction is

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In terms of electrons, oxidation is

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and reduction is

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A displacement reaction is where a

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reactive

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displace a

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reactive

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from its compound.

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What is a redox reaction?

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Any metal below

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in the reactivity series can be extracted by

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What is an electrolyte?

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Positive ions move towards the

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and are

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because they

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Negative ions move towards the

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and are

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because they

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When ions lose or gain electrons, they form the...

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