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C1 > Topic 3 and 4 > Flashcards

Topic 3 and 4 Flashcards

1
Q

What is the acid found within the stomach?

A

Hydrochloric Acid

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2
Q

Antacid

A

A compound that is used to neutralise acid in the stomach

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3
Q

What is the cause of indigestion?

A

The stomach produces too much acid which can cause stomach pain

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4
Q

Base

A

A substance that will react with an acid to form only salt and water

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5
Q

Salt

A

A compound formed by the neutralisation of an acid by a base. The first part of the chemical name comes from the metal in the metal oxide/hydroxide/carbonate. The second part comes from the acid

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6
Q

Alkali

A

A soluble base

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7
Q

pH scale

A

A scale from 1 to 14 showing the acidity or alkalinity. Numbers below 7 are acids. Numbers above 7 are alkalis. pH 7 is neutral

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8
Q

Indicator

A

A solution that changes colour in acid and alkaline solutions

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9
Q

Universal Indicator

A

A mixture of different indicators giving a different colour at different points on the pH scale

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10
Q

Litmus paper

A

Blue litmus paper turns red in acid solutions and red litmus paper turns blue in alkaline solutions

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11
Q

Hazard Symbols

A

Symbols used on containers that warn people about the dangers of the contents

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12
Q

Acid + Metal Oxide —->

A

Salt + Water

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13
Q

Acid + Metal Hydroxide —–>

A

Salt + Water

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14
Q

Acid + Metal Carbonate ——>

A

Salt + Water + Carbon Dioxide

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15
Q

Acid + Base —–>

A

Salt + Water

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16
Q

Sulfuric acid produces what type of salts?

A

Sulfates

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17
Q

Nitrate salts are produced by what acid?

A

Nitric Acid

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18
Q

Chloride salt are produced by what acid?

A

Hydrochloric Acid

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19
Q

Electrolysis

A

Passing a direct current through an electrolyte to decompose it.

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20
Q

Decomposed

A

Large molecules broken down into smaller ones

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21
Q

Electrolytes

A

A liquid which conducts the electric current and is decomposed by it

22
Q

Test for chlorine

A

Damp blue litmus paper will turn red and then white as it is bleached

23
Q

3 uses of chlorine

A

Treat our water supply killing microorganisms. Manufacture of bleach and other cleaning products. Manufacture of plastics (e.g. PVC)

24
Q

Test for Hydrogen

A

‘Squeaky Pop’ test. Hydrogen in the presence of a lighted splint will cause a squeaky pop.

25
Q

Test for Oxygen

A

Glowing Splint test. Blow a lit splint out so that the splint remain glowing, place this in the mouth of a test tube containing the gas to be tested. Oxygen will cause the splint to relight.

26
Q

Ore

A

Rock from which a metal can be extracted for a profit

27
Q

What metal does the ore Bauxite contain?

A

Aluminium

28
Q

What metal does the ore Cinnabar contain?

A

Mercury

29
Q

What metal does the ore Galena contain?

A

Lead

30
Q

What metal does the ore Haematite contain?

A

Iron

31
Q

What metal does the ore Malachite contain

A

Copper

32
Q

Extraction

A

Reaction in which metal is produced from a compound in an ore

33
Q

Reactivity Series

A

A list of metals arranged in order of reactivity

34
Q

Reduction

A

Occurs when oxygen is removed from a compound

35
Q

Corrosion

A

Occurs when a metal is converted to its oxides by the action of moist air

36
Q

Rusting

A

The corrosion of iron to form iron oxides

37
Q

Oxidation

A

Occurs when oxygen is added to an element or compound

38
Q

Recycle

A

To extract a material from waste so that it can be reused or processed to make a new object or material

39
Q

Electrical Conductor

A

Allows electricity to pass through material

40
Q

Malleable

A

Can be hammered into shape

41
Q

Ductile

A

Can be stretched into wires

42
Q

Density

A

The mass of a substance per unit volume; the unit is usually g/cm3

43
Q

Alloy

A

Mixture of metals

44
Q

Alloy Steels

A

An alloy of iron with other metals

45
Q

H - Carats

A

A measure of the purity of gold, with pure gold being 24 carat

46
Q

H - Fineness

A

A measure of the purity of gold in parts per thousand with pure gold having a fineness of 1000

47
Q

H - Smart Material

A

A material with a property that changes with a change in conditions

48
Q

H - Shape Memory Alloy

A

An alloy that returns to its original shape with a change in conditions, often temperature

49
Q

H - Nitinol

A

An example of shape memory alloy of nickel and titanium. Used to repair collapsed arteries and in flexible spectacle frames

50
Q

Stainless Steel

A

An alloy of Iron, chromium and nickel

C1 (3 decks)

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