Chemistry Paper 21
May / June 2025·5070·8 questions
Mock exam: 75 min, official timing
Question paper
Question 1
Question 2
Question 3
Question 4
Question 5
Question 6
Question 7
Question 8
Mark scheme
Question 1
1(a)[1]
1(b)[1]
1(c)[1]
1(d)[1]
1(e)[1]
Question 2
2(a)(i)[2]
2(a)(ii)[1]
2(b)[2]
2(c)[2]
2(d)(i)[1]
2(d)(ii)[1]
Question 3
3(a)[1]
3(b)[1]
3(c)[3]
3(d)[3]
3(e)[1]
Question 4
4(a)[1]
4(b)[2]
4(c)(i)[3]
4(c)(ii)[1]
4(d)[2]
4(e)[3]
Question 5
5(a)[1]
5(b)(i)[2]
5(b)(ii)[2]
5(c)(i)[2]
5(c)(ii)[1]
5(c)(iii)[2]
5(c)(iv)[2]
Question 6
6(a)(i)[1]
6(a)(ii)[3]
6(b)[2]
6(c)(i)[2]
6(c)(ii)[1]
6(d)(i)[2]
6(d)(ii)[2]
6(e)[3]
Question 7
7(a)[1]
7(b)[2]
7(c)[2]
7(d)[1]
Question 8
8(a)(i)[1]
8(a)(ii)[2]
8(b)(i)[1]
8(b)(ii)[1]
8(b)(iii)[1]
8(c)(i)[2]
8(c)(ii)[2]
8(d)[1]