Topic 4 - Extracting Metals and Equilibria Flashcards Preview

GCSE Chemistry Edexcel Grade 9-1 course > Topic 4 - Extracting Metals and Equilibria > Flashcards

Flashcards in Topic 4 - Extracting Metals and Equilibria Deck (15)
Loading flashcards...
1
Q

what is oxidation?

A

the reaction with or the addition of oxygen, oxidation can also be the loss of electrons.

2
Q

what is reduction?

A

the removal of oxygen or the gain of electrons

3
Q

are combustion reactions always endothermic or exothermic?

A

exothermic

4
Q

what is a type of reaction which involves oxidation?

A

combustion

5
Q

what does the reactivity series show about metals?

A

how easily metals are oxidised

6
Q

what is the reactivity series?

A

a table that lists metals in order of their reactivity

7
Q

what dictates how a metal is extracted from its ore?

A

a metal’s position in the reactivity series compared to carbon

8
Q

how does hydrogen show the reactivity of metals with dilute acids in the reactivity series?

A

if a metal is below hydrogen in the reactivity series, it’s less reactive than hydrogen and therefore won’t react with dilute acids

9
Q

what does hydrogen show about metals in the reactivity series?

A

the reactivity of metals with dilute acids

10
Q

what is the order of the reactivity series? (most reactive to least reactive.)

A

potassium, sodium, calcium, magnesium, aluminium, carbon, zinc, iron, hydrogen, copper, silver, gold.

11
Q

what is the symbol for copper?

A

Cu

12
Q

what is the symbol for silver?

A

Ag

13
Q

what is the symbol for gold?

A

Au

14
Q

what is the pattern with resistance to oxidation in the reactivity series?

A

as reactivity increases, the resistance to oxidation decreases. the most reactive elements are the least resistant to oxidation and the least reactive elements are the most resistant to oxidation.

15
Q

why do metals at the top of the reactivity series corrode easily?

A

because metals at the top of the reactivity series are less resistant to oxidation.