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chemistry:Yr11 > QUESTIONS!! > Flashcards

QUESTIONS!! Flashcards

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1
Q

Name three metal ions that can not displace hydrogen:

A

Copper, gold and silver

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2
Q

What is water crystallization

A

Water included in the structure of a salt as crystals.

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3
Q

Mineral acids:

A

Sulphuric acids, hydrochloric acids and nitric acid

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4
Q

Why is hydrogen a proton

A

A hydrogen atom contains 1 proton, 1 electron, and no neutrons to format an ion. Hydrogen loses the electron (H±); a proton is left.

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5
Q

Test for water

A

Use Copper (II) sulfate or chloride cobalt.

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6
Q

Color of calcium carbonate

A

White

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7
Q

pH of calcium sulphage

A

7,bc its neutral (bc it’s a salt)

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8
Q

Ammonium hydroxide color

A

Colorless

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9
Q

Tests for carbonates

A

Add any acid, carbonate dioxide gas will be produced.
Acid + metal carbonate → carbon dioxide + water + salt

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10
Q

Explain what is meant by the terms strong acid and weak acid

A

A strong acid fully dissocates in water to have a high concentration of hydrogen ions whole a weak acid partially dissocates to form a low concentration of hydrogen ions

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11
Q

What is the color of universal indicator in a solution of table salt (sodium chloride)?

A

Green

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12
Q

What is the color of dry red litmus paper in calcium hydroxide powder

A

Litmus paper needs to be wet to react so the color will stay the same. Red

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13
Q

What is the color of thymolphthalein in a solution of sodium hydroxide?

A

Blue

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14
Q

What is the color of Methyl orange in a solution of a substance with a pH of 8.5?

A

Yellow

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15
Q

What is the color of damp blue litmus paper in co2 gas

A

Red

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16
Q

What is the color of methyl orange in water?

A

Orange

17
Q

Predict the color and solubility of the following compounds: Chromium (III)

A

Green and soluble

18
Q

Predict the color and solubility of the following compounds: Lead (II) Sulphate

A

White and insoluble.

19
Q

Predict the color and solubility of the following compounds: Copper (II) Oxide

A

Black and insoluble

20
Q

Predict the color and solubility of the following compounds: Barium Hydroxide

A

White and soluble

21
Q

Predict the color and solubility of the following compounds: Bromine liquid

A

Orange and soluble

22
Q

Predict the color and solubility of the following compounds: Chlorine gas

A

GREEN AND SOLUBLE

23
Q

Methyl orange in acid

A

Red

24
Q

Methyl orange color in base

A

Blue

25
Q

thymolphthalein color in acid

A

Colorless

26
Q

thymolphthalein color in base

A

Blue

27
Q

Metal oxides are bases

A
28
Q

A salt

A

A salt is a metal combined with either a chloride (HCL), sulphate( h2so4) or nitrate (HNO3) , carbonate (Co²‐3)

29
Q

What is the other name for CAOH

A

Lime water

chemistry:Yr11 (5 decks)

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