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Science Revision 2023 > Acids and Bases > Flashcards

Acids and Bases Flashcards

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1
Q

What is the electron arrangement cap for each electron layer?

A

2,8,8,-

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2
Q

Na loses 1 electron to gain a full outer valence shell. What charge does this Sodium ion have now?

A

Positive, Na^+

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3
Q

The ion Lithium (Li^+) has a positive charge. What is the name of it’s ion?

A

Cation

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4
Q

The Sulfur ion (S^-) has a negative charge. What is the name of its ion?

A

Anion

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5
Q

Oxygen adds two electrons to form a oxygen ion. What is the symbol for an oxygen ion?

A

O^2-

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6
Q

Formula for Hydrogen chloride

A

HCl

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7
Q

Formula Copper oxide

A

CuO

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7
Q

Lithium oxide

A

Li^2O

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7
Q

Magnesium chloride

A

MgCl^2

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8
Q

Sulfate ion

A

SO4^2-

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9
Q

Carbonate ion

A

CO3^2-

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10
Q

Hydroxide ion

A

OH^-

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11
Q

Nitrate ion

A

NO3^-

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12
Q

Magnesium carbonate

A

MgCO3

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13
Q

Sodium Sulfate

A

Na2SO4

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14
Q

Lithium carbonate

A

Li2CO3

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15
Q

Magnesium Hydroxide

A

Mg(OH)2

16
Q

What colour does red litimus paper turn when in contact with an acid?

A

Red

17
Q

What colour does red litimus paper turn when in contact with a base?

A

blue

18
Q

What colour does blue litimus paper turn when in contact with an acid?

A

Red

19
Q

What colour does red litimus paper turn when in contact with a base?

A

Blue

20
Q

Any substance above the pH level 7 is concidered…

A

Bases (alkalines)

21
Q

Any substance below the pH level 7 is concidered…

A

Acids

22
Q

Any substance at the pH level 7 is concidered…

A

neutral

23
Q

What colour does the universal indicator turn when in contact with water (neutral)?

A

green

24
Q

What colour does the universal indicator turn when in contact with acids?

A

orange/red/yellow

25
Q

What colour does the universal indicator turn when in contact with alkaines?

A

blue/purple

26
Q

When the universal indicator turns red, this shows that there are more ___ ions than ___ ions

A

There are more hydrogen ions than hydroxide ions.

27
Q

When the universal indicator turns blue, this shows that there are more ___ ions than ___ ions

A

There are more hydroxide ions than hydrogen ions.

28
Q

When the universal indicator turns green, this shows that…

A

there is a equal amount of hydroxide and hydrogen ions.

29
Q

A swimming pool as a pH level of 8. Do you add water, acids and alkalines to make the soloution neutral?

A

Acids, because the soloution now is basic (pH level 7-14) and we need acids which has a lower pH level (pH level 0-6) to balance the average pH level out.

30
Q

A soloution was tested with red litimus paper and the paper stayed red. We can assume that the soloution must be acidic. Is this true?

A

No, because red litimus paper stays red when in contact with both acids and neutral soloutions. This means that the soloution could be either. You need to test it with blue litimus paper/univeral indicator to determine its components.

31
Q

Complete the word equation:
hydrochloric acid + magnesium hydroxie —>

A

magnesium chloride + water

32
Q

potassium oxide + nitric acid —>

A

potassium nitrate + water

33
Q

nitric acid + anything =

A

anything nitrate + water

34
Q

hydrochloic acid + anything =

A

anything chloride + water

35
Q

sulfuric acid + anything =

A

anything sulfate+ water

36
Q

calcium oxide + hydrochloric acid —>

A

calcium chloride + water

37
Q

Cleaning/disinfectant are usually of a basic/acidic/neutral level

A

basic

38
Q

Describe the properties of a base

A
  • feel soapy and slippery
  • conduct electricity when dissolved in water
  • taste bitter
39
Q

Describe the properties of an acid

A
  • conduct electricity
  • taste acidic
  • react with metal to create hydrogen gas
40
Q

What group metals are insolouble in water?

A

Group 1 hydroxides, oxides and cabonates, but the hydroxides, oxides and carbonates of other groups are solouble in water.

Science Revision 2023 (5 decks)

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