Chemistry Test

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Where are non-metals and the metals found?
They are divided by a zig zagged line starting from the top Boron on the right,being A non metal, and alluminium below on the left, being a metal.
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Are there more metals than non-metals?
Yes.
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What are the 3 main chracteristics of a metal (including oxide character)?
They are shiny. conduct electricty and its oxide character is basic.
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What are the 3 main characteristics of a non-metal (including oxide chracter)?
They are dull, do not conduct electricity and its oxide character is acidic?
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2 facts about alkalis?
All alkalis are bases and an alkali is a soluble base.
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What is the reactivity series (in the right order top to bottom)?
Potassium, Sodium, Lithium, Calcium, Magnesium, Alluminium, Zinc, Iron, Hydrogen, copper, silver and gold
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What happens in a displacement reaction?
A more reactive metal displaces a less reactive metal from one of its own salts.
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Explain what displacement occurs in this equation? Magnesium + copper oxide -> Magnesium oxide and copper.
The more reactive metal, magnesium, is displacing the less reactive metal coppper from its own salt, therefore the magnesium joins up with the oxygen to produce magnesium oxide.Then the oxygen reacts with the magnesium leaving the copper by itself.
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What does 'MAZIT' actually mean?
Metals that are safe to react with water
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What does 'MAZIT' really stand for?
Magnesium, Alluminium, Zinc, Iron and Tin.
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What do acids produce when they react with water?
H+ ions.
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What does Magnesium give out when it reacts with acid?
Hydrogen.
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What does effervesence mean and what does it prove?
It means fiz and bubbles. it proves that a gas is being formed.
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What does an exothermic reaction mean?
It means that the particular reaction is giving out and producing heat.
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When a metal reacts with an acid what occurs?
Effervesence.
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What does this effervesence give out?
Hydrogen.
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Where does the metal have to be to produce hydrogen?
It has to be above hydrogen in the reactivity series or more reactive.
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If the metal is more reactive, what happens?
It speeds up the reaction.
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When does this reaction finish?
When all the metal or the acid is used up.
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What type of reaction occur when an acid reacts with a metal?
An exothermic reaction.
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What is formed in the reaction mixture and what happens to it?
A soluble salt is formed and it dissolves.
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What is a salt?
A salt is a compund in which a metal has replaced hydrogen in n acid.
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What types of salts forms in hydrochloric, sulphuric and nitric acid?
Hydrochloric acid -> Chloride salts Sulfuric acid -> Sulphate salts Nitric acid -> Nitrate salts.
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Metals react with acids using what equation to help?
Metal + acid -> salt +hydrogen.
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What nmemonic can you use to help you with this equation?
MASH.
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What does really stand for?
Metal + Acid -> Salt + Hydrogen.
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Give an example of MASH?
Potassium (metal) + Hydrochloric acid (acid) -> Potassium chloride + Hydrogen
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How can Hydrogen be given out?
If the metal is more reactiveb or above hydrogen in the reactivity series.
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What is the useful equation for hydroxides, to help you?
Metal + water -> hyrdogen + metal hydroxide.
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What are all metal hydroxides?
Alkaline.
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If a universal indicator was applied, what colour would it turn?
Blue/Purple.
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Give an example in this equation?
Potassium + water -> hydrogen + potassium hydroxide.
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Describe, fully, what happens when calcium reacts with water?
The calcium floats on the surface of the water. It then forms a ball. that ball moves around the surfce of water leaving a white trail behind.Finally the ball becomes smaller and smaller as dissapears.
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What flame does sodium burn with?
It burns with a yellow flame.
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What flame does potassium burn with?
It burns with a lilac flame.
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What metals don't react with water?
Magnesium, Alluminium, Zinc and Tin.
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However, what do they react with?
Steam.
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What equation is used to help us to remember?
Metal + Steam -> Hydrogen + Metal oxide.
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Give an exanmple of this equation with magnesium?
Magnesium + steam -> hydrogen + magnesium oxide.
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What happens when magnesium burns?
It burns with a bright white flame and turns into a white ash. It also gives out hydrogen.
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What doesn't react with anything and doesn't displace hydrogen?
Gold, silver and copper.
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What happens in the displacement of oxides?
A more reactiveA metal displaces a less reactive metal from one of its own salts.
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Give an example with copper oxide and potassium?
Potassium + copper oxide -> potassium oxide + copper.
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What does oxidised mean?
It means that a substance has gained oxygen.
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What does reduced mean?
It means a substance has loss oxygen.
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Give an example?
Iron + copper oxide -> iron oxide + copper.
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What is oxidised in this reaction?
Iron.
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What is reduced in this reaction?
Copper.
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What is a redox reaction?
It is a reaction of which bothe oxidation and reduction takes place.
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What example is there of this?
The thermite reaction.
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Other cards in this set

Card 2

Front

Are there more metals than non-metals?

Back

Yes.

Card 3

Front

What are the 3 main chracteristics of a metal (including oxide character)?

Back

Preview of the front of card 3

Card 4

Front

What are the 3 main characteristics of a non-metal (including oxide chracter)?

Back

Preview of the front of card 4

Card 5

Front

2 facts about alkalis?

Back

Preview of the front of card 5
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