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

what is oxidation?

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

2

what is reduction?

the removal of oxygen or the gain of electrons

3

are combustion reactions always endothermic or exothermic?

exothermic

4

what is a type of reaction which involves oxidation?

combustion

5

what does the reactivity series show about metals?

how easily metals are oxidised

6

what is the reactivity series?

a table that lists metals in order of their reactivity

7

what dictates how a metal is extracted from its ore?

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

8

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

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

what does hydrogen show about metals in the reactivity series?

the reactivity of metals with dilute acids

10

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

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

11

what is the symbol for copper?

Cu

12

what is the symbol for silver?

Ag

13

what is the symbol for gold?

Au

14

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

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

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

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