Almost there! Just a few clicks from the resource you need.
You can either checkout with the notes in your basket now, or find more notes. The choice is yours!
My Basket
OCR 2024 GCSE Combined Science B Twenty First Century Science J260/06: Chemistry (Higher Tier) with Marking Scheme Merged.
OCR 2024 GCSE Combined Science B Twenty First Century Science J260/06: Chemistry (Higher Tier) with Marking Scheme Merged. COMBINED SCIENCE B Oxford Cambridge and RSA Friday 17 May 2024 – Morning GCSE (9–1) Combined Science B (Twenty First Century Science) J260/06 Chemistry (Higher Tier) Time allowed: 1 hour 45 minutes You must have: • a ruler (cm/mm) • the Data Sheet for GCSE (9-1) Combined Science (Chemistry) B (inside this document) You can use: • an HB pencil • a scientific or graphical calculator * J H 2 6 0 0 6 * Please write clearly in black ink. Do not write in the barcodes. Centre number First name(s) Last name INSTRUCTIONS Candidate number • Use black ink. You can use an HB pencil, but only for graphs and diagrams. • Write your answer to each question in the space provided. If you need extra space use the lined pages at the end of this booklet. The question numbers must be clearly shown. • Answer all the questions. • Where appropriate, your answer should be supported with working. Marks might be given for using a correct method, even if your answer is wrong. INFORMATION • The total mark for this paper is 95. • The marks for each question are shown in brackets [ ]. • Quality of extended response will be assessed in questions marked with an asterisk (*). • This document has 24 pages. ADVICE • Read each question carefully before you start your answer. 2 1 (a) Table 1.1 shows the diameters of some particles. Table 1.1 Particle Diameter (m) Carbon atom 1.54 × 10–10 Fullerene molecule 1.10 × 10–9 Silver atom 2.88 × 10–10 Platinum nanoparticle 1.00 × 10–8 (i) Which two particles have diameters with the same order of magnitude? ....................................................................... and ....................................................................... [1] (ii) Write down the particles in order of diameter. Smallest........................................ ........................................ ........................................ Largest........................................ [2] (b) Nanoparticles make effective catalysts because they have a high surface area to volume ratio. Table 1.2 shows the surface area to volume ratio of some different sized particles. Table 1.2 Nanoparticle Particle of Particle of Fine Powder Coarse Powder Size of Particle (nm) 60 600 6000 Surface Area to 0.1 0.01 0.001 Volume Ratio Describe the relationship between the size of a particle and its surface area to volume ratio. .......................................................................................................................................................... .......................................................................................................................................................... .......................................................................................................................................................... ..................................................................................................................................................... [2] © OCR 2024 3 (c) The nanoparticle shown is a cube. This nanoparticle has a volume of 1000 nm3 . h l w NOT TO SCALE Calculate the surface area of the nanoparticle.
£5.00 Preview RemoveChemI Atomic Structure and Electron Structure
Chem1 (1st year beginner) notes on two chapters E = electrons
£2.00 Preview RemoveOperations with Algebraic and Rational Expressions
ADDING AND SUBTRACTING ALGEBRAIC EXPRESSIONS 2 Addition and subtraction of monomials: 2 MULTYPLY ALGEBRAIC EXPRESSIONS 3 Multiply polynomials by monomials 3 Multiply polynomials by polynomials 4 DIVIDING ALGEBRAIC EXPRESSIONS 5 Dividing monomials by monomials 5 Dividing polynomials by integers and monomials 5 Rational Expressions 6 Simplifying rational expressions using algebraic Identities 6 Simplifying an rational expressions using factorization 6 Multiplying Rational expressions 7 Dividing a Rational expression with another Rational expression 8 Sum and Difference of Rational Expressions 9 To add or subtract two rational expressions with the same denominator 9 To add or subtract two rational expressions with unlike denominator 10 Remainder Theorem 11 Divide the polynomial by monomial 11 Divide the polynomial by polynomial 11 Algebraic Identities 12
£3.75 Preview RemoveGCSE Chemistry Triple Award General Notes
Handwritten in joined up writing. Scanned into computer. GCSE level. Removing hardness from water, braking and making bonds, Identifying substances
£0.60 Preview RemoveGeneral Sciences
3rd year general sciences student. Interesting science facts/Notes. High level information. I get my notes from reviewed books for Biology/chemistry/Physics That are clear and every single bit of information is based on a tested experiment.. Thank you
£18.75 Preview RemoveINTRODUCTION TO CALCULUS(Limits and Continuity)
DEFFERENTIATION OF CALCULUS FUNCTIONS AND ALL THE DEFFERENT TYPES OF DERIVATIVES USING CONTINUITY RULES.
£3.13 Preview Removethermodynamics 2 and phase equilibria, system and state
These notes will provide you with an introduction to thermodynamics its states and limitations
£2.50 Preview RemoveChemistry: Types of Reactions with Examples and Explanation
Notes were made for chemistry unit dealing with all types of reactions. The notes explain and give examples for all types of reactions.
£1.30 Preview RemoveGCSE EDEXCEL CHEMISTRY TOPIC 1 KEY CONCEPTS
notes with specification points clear, concise, detailed, simple - but quality Higher Grade 9 if you learn it
£2.50 Preview RemoveAlgebra - Complex Numbers
These notes provide a full coverage of all types of Complex Numbers.
£5.00 Preview RemoveChemical Forensics (based on Edexel IGCSE course)
This covers flame tests, identifying cations with sodium hydroxide, Identifying halide ions using silver nitrate solution, Identifying sulfate ions (SO₄²⁻), Identifying carbonate ions (CO₃²⁻) and identifying gases. Th procedure is covered as well as the results.
£0.80 Preview Remove