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Chemistry > Gas Tests > Flashcards

Gas Tests Flashcards

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1
Q

How to test for hydrogen gas?

A

Squeaky Pop test
Place a lit splint into the tube with the hydrogen gas and it will produce a pop sound when the gas is burnt.

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1
Q

How to test for carbon dioxide?

A

Lime water turns cloudy
Bubble/ when carbon dioxide is added to limewater the solution goes from colourless to cloudy/milky.

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2
Q

How to test for oxygen?

A

Get a glowing splint and put it in a tube with oxygen. Then the splint will reignite. This is because oxygen supports combustion.

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3
Q

How to test for chlorine?

A

Get a damp blue litmus paper and place it in a test tube with chlorine gas. The litmus paper will turn from blue to red and then finally bleach white.

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4
Q

How to test for acidity of substances?

A

The strength of an acid is a measure of how much an acid compound ionise.

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5
Q

What determine an acid?

A

Acids are formed when a compound dissolve in water and ionise to add hydrogen ions into the solution. All acids have hydrogen.

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6
Q

How is something a strong acid and weak acid?

A

Strong acids fully ionise in solutions to release all the hyrdogen ions.
While Weak acids do not fully ionise.

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7
Q

What is concentration?

A

Concentration is the amount of solute in a given amount of solvent/space.

Mass/volume

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8
Q

Metal + Acid

A

Salt + hydrogen

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9
Q

Metal oxide + Acid

A

salt + water

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10
Q

Metal hydroxide + Acid

A

Salt + water

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11
Q

Metal carbonate + Acid

A

Salt + water + carbon dioxide

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12
Q

How to name the salt

A
  1. Write the Metal ion name
  2. Write the non-metal ion name ending with ide or ate- if extra oxygen or non-metal is needed.
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13
Q

What salt does hydrochloric acid make?

A

HCI
Metal Chloride salt

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14
Q

What salt does sulfuric acid make?

A

HSO4
Metal Sufate salt

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15
Q

What salt does nitrate acid make?

A

HNO3
Metal nitrate salt

16
Q

What does the PH Scale tell?

A

The PH scale is from 0 to 14 and measure is a substance is acidic or basic.

The PH of a solution measure the concentration of hydrogen ions. The higher the concentration of hydrogen ions are, the lower the PH is.

17
Q

What is Vinegar name in science?

A

Ethonoic acid

18
Q

What colour of percipitate does copper form?

A

Blue percipitate is by copper ion.

19
Q

What colour percipitate does iron 2 forms?

A

Iron 2 form a green percipitate

20
Q

What colour percipitate does iron 3 forms?

A

Iron 3 forms a orange percipitate.

21
Q

What colour percipitate foes ar forms?

A

Ar form a brown percipitate

22
Q

What solution is Iodine?

A

Yellow

23
Q

What sollution is Copper?

A

Blue

24
Q

Flame test colours

A

Copper = green
ca= red to organge
sodium= yellow
pottasium= lilac
lithium= red

25
Q
A

Chemistry (6 decks)

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