对alevel考试有一定了解的同学应该知道，A-Level考试有70多个科目，如何选择alevel科目对学生申请的大学至关重要，大家在备考alevel的时候应该利用哪些资料刷题?下面成都新航道给大家简要介绍下。
不管是哪个科目，小编建议大家最好选择历次alevel考试真题来刷题，因为这样会更接近alevel真实考试，我们可以从下面一套2021年的A-Level化学真题看看如何刷题。
Instructions
• Use black ink or black ball‑point pen.
• Fill in the boxes at the top of this page with your name, centre number and candidate number.
• Answer all questions.
• Answer the questions in the spaces provided – there may be more space than you need. Information
• The total mark for this paper is 90.
• The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question.
• In the question marked with an asterisk (*), marks will be awarded for your ability to structure your answer logically showing how the points that you make are related or follow on from each other where appropriate.
• A Periodic Table is printed on the back cover of this paper. Advice
• Read each question carefully before you start to answer it.
• Show all your working in calculations and include units where appropriate.
• Check your answers if you have time at the end.
SECTION A
Answer ALL the questions in this section. You should aim to spend no more than 20 minutes on this section. For each question, select one answer from A to D and put a cross in the box . If you change your mind, put a line through the box and then mark your new answer with a cross.
1.The apparatus shown was used to measure the standard electrode potential for the reduction of 
ions in acid solution:
(a) Which material should be used for each electrode?
b) Solution 1 is
(Total for Question 1 = 4 marks)
Use this space for any rough working. Anything you write in this space will gain no credit.
