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Chemistry C4 > C4 > Flashcards

C4 Flashcards

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1
Q

METALS REACT WITH OXYGEN TO PRODUCE _____?

A

METAL OXIDES

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2
Q

WHAT IS OXIDATION IN TERMS OF ELECTRONS?

A

OXIDATION IS THE LOSS OF ELECTRONS AND GAIN OF OXYGEN

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3
Q

WHAT IS REDUCTION IN TERMS OF ELECTRONS?

A

REDUCTION IS THE GAIN OF ELECTRONS AND LOSS OF OXYGEN

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4
Q

WHAT DO METAL ATOMS FORM WHEN METALS REACT WITH OTHER SUBSTANCES?

A

POSITIVE IONS

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5
Q

REACTIONS OF METALS WITH WATER AND ACIDS ARE LIMITED TO ___ TEMPERATURE?

A

ROOM

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6
Q

METALS SUCH AS GOLD ARE FOUND IN THE EARTH BECAUSE THEY ARE ____?

A

UNREACTIVE

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7
Q

METALS CAN BE EXTRACTED FROM THEIR OXIDES BECAUSE? THIS IS CALLED?

A

THEY ARE LESS REACTIVE THAN CARBON. REDUCTION WITH CARBON

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8
Q

METAL + ACID –>

A

SALT + WATER

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9
Q

ACID + ALKALI –>

A

WATER + SALT

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10
Q

BASE + ACID –>

A

WATER + SALT

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11
Q

ACIDS ARE NEUTRALISED BY ____?

A

ALKALIS

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12
Q

ALKALIS ARE NEUTRALISED BY ____?

A

ACIDS

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13
Q

ACIDS + METAL CARBONATE –>

A

SALT + WATER + CARBON DIOXIDE

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14
Q

HYDROCHLORIC ACID PRODUCES WHAT SALT?

A

CHLORIDE

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15
Q

NITRIC ACID PRODUCES WHAT SALT?

A

NITRATE

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16
Q

SULPHURIC ACID PRODUCES WHAT SALT?

A

SULFATE

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17
Q

NAME 4 INSOLUBLE SUBSTANCES

A

METALS
METAL OXIDES
HYDROXIDES
CARBONATES

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18
Q

SALT SOLUTIONS ARE ___ TO PRODUCE _____ _____?

A

CRYSTALLISED

SOLID SALTS

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19
Q

IN AQUEOUS SOLUTIONS ACIDS PRODUCE ________?

A

HYDROGEN IONS

H+

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20
Q

IN AQUEOUS SOLUTIONS ALKALIS PRODUCE ________?

A

HYDROXIDE IONS

OH-

21
Q

pH SCALE RANGES FROM __ TO__?

A

0 TO 14

22
Q

DESCRIBE THE pH SCALE

A

A MEASURE OF A SOLUTION’S ACIDITY OR ALKALINITY

23
Q

HOW IS pH SCALE MEASURED?

A

BY UNIVERSAL INDICATOR OR pH PROBE

24
Q

TITRATION DEFINITION

A

WHERE A SOLUTION OF AN KNOWN CONCENTRATION IS USED TO FIND THE CONCENTRATION OF AN UNKNOWN SOLUTION

25
Q

IN AN AQUEOUS SOLUTION A STRONG ACID IS ____ IONISED

A

COMPLETELY IONISED

26
Q

IN AN AQUEOUS SOLUTION A WEAK ACID IS ____ IONISED

A

PARTIALLY IONISED

27
Q

NAME 3 WEAK ACIDS

A

ETHNIC ACID
CITRIC ACID
CARBONIC ACID

28
Q

NAME 3 STRONG ACIDS

A

SULPHURIC ACID
HYDROCHLORIC ACID
NITRIC ACID

29
Q

THE STRONGER AN ACID THE ____ THE pH

A

LOWER

30
Q

AS THE pH DECREASES BY 1 UNIT, THE HYDROGEN IONS CONCENTRATION OF SOLUTION DECREASES BY __?

A

10

31
Q

IN ELECTROLYSIS WHAT TYPE OF COMPOUND IS USED?

A

IONIC COMPOUND

32
Q

IN ELECTROLYSIS THE SOLID IONIC COPMPUND MUST BE ______ OR ______ __ _____

A

MELTED

DISSOLVED IN WATER

33
Q

WHY MUST THE IONIC COMPOUND BE MELTED OR DISSOLVED IN WATER?

A

THE IONS ARE FREE TO MOVE ABOUT WITHIN THE LIQUID OR SOLUTION

34
Q

LIQUIDS ABLE TO CONDUCT ELECTRICITY WITH IONS FREE TO MOVE ARE CALLED?

A

ELECTROLYTES

35
Q

AN _____ CURRENT IS PASSED THROUGH THE ELECTROLYTES

A

ELECTRIC CURRENT

36
Q

THE ELECTRIC CURRENT PASSED THROUGH THE ELECTROLYTES CAUSES ___ TO MOVE TO THE ________

A

IONS

ELECTRODES

37
Q

POSITIVELY CHARGED IONS MOVE TO THE _____

A

NEGATIVE ELECTRODE

38
Q

NEGATIVELY CHARGED IONS MOVE TO THE ______

A

POSITIVE ELECTRODE

39
Q

POSITIVELY CHARGE ION

A

CATION

40
Q

NEGATIVELY CHARGED ION

A

ANION

41
Q

POSITIVE ELECTRODE

A

ANODE

42
Q

NEGATIVE ELECTRODE

A

CATHODE

43
Q

THE METAL IS PRODUCED AT WHAT ELECTRODE

A

CATHODE

44
Q

THE NON-METAL IS PRODUCED AT WHAT ELECTRODE

A

ANODE

45
Q

AT THE CATHODE WHAT IONS GAIN ELECTRONS

A

POSITIVELY CHARGED IONS

46
Q

AT THE ANODE WHAT IONS LOSS ELECTRONS

A

NEGATIVELY CHARGED IONS

47
Q

WHEN CATIONS GAIN ELECTRONS THIS IS CALLED

A

REDUCTION

48
Q

WHEN ANIONS LOSE ELECTRONS THIS IS CALLED

A

OXIDATION

Chemistry C4 (1 decks)

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