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Flashcards in Metals Deck (31)
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1

How are the bonds in metallic bonding held together?

The positive metal ion is attracted to the negatively charged electrons

2

How does electricity work?

Atoms are incredibly close together, thus that the electrons which spin around the atoms, pass onto each other and jump from atom to atom

3

What are the three reactions of metals?

Metal + Water
Metal + Acid
Metal + Oxygen

4

Which metals react strongly with water, acid and Oxygen?

Very reactive ones

5

What is the general equation for a metal and water reaction?

Metal + Water ----> Metal Hydroxide + Hydrogen

6

What are the unreactive metals?

Gold
Silver
Platinum

7

Which metals react with acid?

Only metals which are higher than hydrogen on the reactivity series as Hydrogen represents the H+ ions which are compulsory of acids

8

What is the general equation for a metal and acid reaction?

Metal + Acid ----> Salt + Hydrogen

9

How is the salt of a metal and acid reaction named?

By taking the name of the metal in the reaction and the name of the acid

eg. Magnesium and Hydrochloric acid produce the salt Magnesium Chloride

10

What is a simple way of carrying out a metal and Oxygen reaction?

By burning the metal

11

What is the general equation for a metal and Oxygen reaction?

Metal + Oxygen ----> Metal Oxide

12

What is the chemical term for a battery?

A cell

13

What is a description of a simple cell?

A cell is two different metals connected by an electrolyte

14

What is an electrolyte solution?

An electrolyte solution is an ionic solution which is used to complete a circuit

15

What is the voltage produced by the cell determined by?

How far apart the two metals are on the electrochemical series (metals which are far away from each other produce high voltages)

16

What direction do the electrons flow in?

Electrons flow for the most reactive metal to the least reactive metal

17

What is a description of a more complex cell?

Two metals, each in an electrolyte solution of their own ions, with each solution connected by an ion bridge

18

What is an ion bridge?

An ion bridge is a piece of filter paper soaked in an ionic solution (such as NaCl solution) which is used to complete a circuit

19

What is Oxidation?

Oxidation is when a metal loses an electron

20

What is Reduction?

Reduction is when a metal gains an electron

21

What is a definition of a redox reaction?

A redox reaction is one where both oxidation and reduction take place

22

Why are simple cells examples of redox reaction?

Because the most reactive metal is losing electrons and the least reactive metal is gaining electrons

23

What is an ore?

An ore is a metal which has reacted with oxygen naturally via air/water

24

What metals do not from ores?

Unreactive metals

25

What is the rule connecting reactivity of the metal to extraction of the metal from its ore?

The more reactive the metal the harder it is to remove it from it's ore

26

What metals can be removed from their ore by heat alone?

Mercury
Silver
Gold
Platinum

27

What metals can be removed from their ore by heating with a reducing agent?

Zinc
Tin
Lead
Copper

28

What is a reducing agent?

A reducing agent is an element or compound which can donate it's electrons. Examples are Carbon or Carbon Monoxide

29

How is Iron removed from its ore?

Via a Blast Furnace

30

What metals can be removed from their ore by electrolysis?

Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium