Foundation Chemistry Past Paper

Only available on StudyMode
  • Download(s) : 665
  • Published : June 12, 2012
Open Document
Text Preview
kirsty

jones

32251

8151

Edexcel GCSE

Chemistry/Science
Unit C1: Chemistry in our World Foundation Tier
Sample Assessment Material Time: 1 hour
You do not need any other materials.
Paper Reference

5CH1F/01
Total Marks

Instructions
Use black ink or 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 60. The marks for each question are shown in brackets – use this as a guide as to how much time to spend on each question. Questions labelled with an asterisk (*) are ones where the quality of your written communication will be assessed – you should take particular care with your spelling, punctuation and grammar, as well as the clarity of expression, on these questions.

Advice
Read each question carefully before you start to answer it. Keep an eye on the time. Try to answer every question. Check your answers if you have time at the end.

Turn over

S39964A
©2010 Edexcel Limited.

*S39964A0114*
Sample Assessment Materials © Edexcel Limited 2011 5

Edexcel GCSE in Chemistry

Answer ALL questions Some questions must be answered with a cross in a box . If you change your mind about an answer, put a line through the box mark your new answer with a cross . The Earth’s atmosphere 1 The amount of each gas in today’s atmosphere is different from the amount of these gases in the early atmosphere. The bar chart shows the percentages of the four main gases in today’s atmosphere. 80 % in atmosphere 70 60 50 40 30 20 10 0 nitrogen oxygen argon carbon dioxide and then

(a) Use the bar chart to identify the gas that makes up nearly four fifths of today’s atmosphere. Put a cross ( ) in the box next to your answer. (1) A argon B carbon dioxide C nitrogen D oxygen (b) The growth of primitive plants reduced the amount of carbon dioxide in the early atmosphere. This happened because of the process of photosynthesis. During photosynthesis another gas is produced. Use a word from the box to complete the sentence. (1) argon hydrogen nitrogen oxygen

The gas produced during photosynthesis is .............................................................................................................................. ........... . . . . . . . . . . . . . . . . . 6 Edexcel GCSE in Chemistry Sample Assessment Materials © Edexcel Limited 2011

(c) Water vapour from the early atmosphere cooled and formed the oceans. (i) What name is given to the change when water vapour becomes liquid water? Put a cross ( ) in the box next to your answer. (1) A boiling B condensing C freezing D melting (ii) Explain how the amount of carbon dioxide in the early atmosphere changed once the oceans had formed. (2) . . . . . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............. ............................................................................................................................... . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............ ............................................................................................................................... . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . ................................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............ ............................................................................................................................... . . . . . . . . . . . . . . . . . ....
tracking img