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Chemistry > Key Reactions > Flashcards

Key Reactions Flashcards

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1
Q

Are metal oxides acidic or basic?

A

Basic

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2
Q

If an element conducts electricity, is it typically a metal or a non-metal?

A

Metal

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3
Q

Which are described as acidic: metal oxides or non-metal oxides?

A

non-metal oxides

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4
Q

What do each of the following state symbols represent: (s), (l), (g), (aq)

A

(s) - solid. (l) - liquid. (g) - gas. (aq) - aqueous (in solution)

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5
Q

State the formula for the copper (II) ion

A

Cu²⁺

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6
Q

State the formula for the iron (II) ion

A

Fe²⁺

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7
Q

State the formula for the iron (III) ion

A

Fe³⁺

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8
Q

State the formula for the lead (II) ion

A

Pb²⁺

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9
Q

State the formula of the hydrogen ion

A

H⁺

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10
Q

State the formula of the silver ion

A

Ag⁺

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11
Q

State the formula of the zinc ion

A

Zn²⁺

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12
Q

What is the formula for magnesium chloride?

A

MgCl₂

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13
Q

Are carbon dioxide and sulfur dioxide acidic or basic?

A

Both are acidic as carbon and sulfur are non-metals

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14
Q

Name the compound formed when magnesium reacts with oxygen

A

magnesium oxide

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15
Q

What colour flames to sulfur, carbon and magnesium produce when they burn in air?

A

Sulfur = blue, Carbon = yellow/orange, Magnesium = white

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16
Q

What happens when a small amount of hydrogen is burnt in a test tube?

A

Squeaky pop

17
Q

How can metal carbonates be used to produce carbon dioxide?

A

Themal Decomposition: when metal carbonates are heated, they break down releasing carbon dioxide. Alternatively, the carbonate can be added to an acid.

18
Q

State the colour of litmus in acidic and alkaline solutions

A

acidic = red alkali = blue

19
Q

State the colour of methyl orange in acidic and alkaline solutions

A

acidic = red alkali = yellow

20
Q

State the colour of phenolphthalein in acidic and alkaline solutions

A

acidic = colourless alkali = pink

21
Q

What is the pH of a neutral solution?

A

7

22
Q

What is the pH of a strong acid?

A

0-2

23
Q

What is the universal indicator colour of a neutral solution?

A

Green

24
Q

What is the universal indicator colour of a pH 0-3 solution?

A

Red

25
Q

What is the universal indicator colour of a pH 11-14 solution?

A

Purple

26
Q

What is an acid?

A

An acid is a source of hydrogen ions, H⁺

27
Q

What is an alkali?

A

An alkali is a source of hydroxide ions, OH⁻

28
Q

What is a base?

A

A substance which can neutralise an acid, forming salt and water only

29
Q

acid + alkali →

A

acid + alkali → salt + water

30
Q

acid + base →

A

acid + base → salt + water

31
Q

acid + metal →

A

acid + metal → salt + hydrogen

32
Q

acid + metal carbonate →

A

acid + metal carbonate → salt + carbon dioxide + water

33
Q

Describe the observations of the reaction of aluminium and dilute hydrochloric acid

A

fizzing and metal disappears

34
Q

Give the formula of sulfuric acid

A

H₂SO₄

35
Q

What two observations can be made when a metal reacts with an acid?

A

Bubbles. Metal disappears.

36
Q

Is ammonia acidic or basic?

A

Basic

37
Q

Describe the test for carbon dioxide gas

A

Bubble the gas through limewater and see if it goes cloudy

38
Q

Describe the test for hydrogen gas

A

Use a lit splint to see if the gas pops

Chemistry (7 decks)

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