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Science > Periodic Table > Flashcards

Periodic Table Flashcards

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1
Q

What is the similarity of metal and non metal

A

they both are elements

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2
Q

State the difference of the two

A

Appearence- Shiny ,Dull
Ductility- Ductile , britle
Malleable- malleable , non
Tensile strength- High ,low
Electrical conductivity - Good .Poor
Heat conductivity - Good, Poor
Density - High, low
Melting/boiling point- high , low

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3
Q

State the characteristics of Aluminium

A

-Malleable,Strong and light, grey and shiny

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4
Q

State the characteristics of Copper

A

-Strong
-Rustproof
-Ductile
Good electric conductor
-brown

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5
Q

State the characteristics of Iron

A

-Strong
-Malleable
-Grey
-Magnetic substance
-Good electric conductor
-Strong

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6
Q

State the characteristics of Zinc

A

-Strong
-Grey
-Good electric conducotr

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7
Q

State the characteristics of Iodine

A

-Black crystal
-Poisonous
-Antiseptic
-Injuries from bacteria

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8
Q

State the characteristics of Chlorine

A

-Greenish yellow gas
-Bleaching agent
-Poisonous

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9
Q

State the characteristics of Sulphur

A

-Yellow powder
-Poisonous

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10
Q

State the characteristics of Carbon

A

-Black
-Smooth
-Light
-The only non-metal element that can conduct electricity

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11
Q

What is compound

A

A compound consists of two or more elements or compound mixed chemically

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12
Q

how does magnesium,copper,zinc and iron react to oxygen

A

add oxide to the ends of each element

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13
Q

State examples of alkali compounds

A

lithium,sodium and potassium

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14
Q

State their reactions (alkali compounds) with water

A

(alkali compound) + water =(AC) hydroxide + hydrogen gas

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15
Q

what is electrolysis

A

a chemical decomposition of a compound to its elements by passing an electric current through the compound

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16
Q

What is compound

A

Compound is a made out of two or different elements that are combined chemically

17
Q

What happens during electrolysis of water

A

electrolysis of water,water is broken down into hydrogen gas and oxygen gas when an electric current passes through the electrode

18
Q

What is electrode

A

Electrode is a conductor through which electricity enters and leaves the electrolyte
Example : Carbon Rod

19
Q

What is electrolyte?

A

Electrolyte is a liquid which conducts electricity

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