H

GENERAL CERTIFICATE OF SECONDARY EDUCATION

B721/02

GATEWAY SCIENCE

ADDITIONAL SCIENCE B

Unit B721: Additional Science modules B3, C3, P3 (Higher Tier)

Candidates answer on the question paper

A calculator may be used for this paper.

OCR Supplied Materials:

None

Duration: 1 hour 15 minutes

Other Materials Required:

Pencil

Ruler (cm/mm)

Candidate

Forename

Candidate

Surname

Centre Number

Candidate Number

INSTRUCTIONS TO CANDIDATES

Write your name clearly in capital letters, your Centre Number and Candidate Number in the boxes above. Use black ink. Pencil may be used for graphs and diagrams only.

Read each question carefully and make sure that you know what you have to do before starting your answer. Answer all the questions.

Write your answer to each question in the space provided, however additional paper may be used if necessary. INFORMATION FOR CANDIDATES

Your quality of written communication is assessed in questions marked with a pencil ().

A list of equations can be found on page 2.

The Periodic Table can be found on the back page.

The number of marks for each question is given in brackets [ ] at the end of each question or part question.

The total number of marks for this paper is 75.

This document consists of 28 pages. Any blank pages are indicated.

Examiner’s Use

Only:

9

2

10

3

11

4

12

5

13

14

7

1

6

15

8

Total

© OCR 2011 [QN/600/1166/X]

OCR is an exempt Charity

Turn over

2

EQUATIONS

energy = mass × specific heat capacity × temperature change

force = mass × acceleration weight = mass × gravitational field strength energy = mass × specific latent heat efficiency = useful energy output (100%) total energy input

work done = force × distance

wave speed = frequency × wavelength power =

work done time power = force × speed power = voltage × current

KE = ½