Gcse chemistry limestone chips coursework

To help with planning and to develop skills, we have embedded a small number of practical investigations in the theory units. The benefits are twofold: Knowledge of these practical investigations and the ability to interpret the data that can result from them can be assessed in the examination papers. The best way to ensure this is to undertake the practical investigations.

Gcse chemistry limestone chips coursework

What is the effect of particle size and surface area on the rate of a reaction involving a solid reactant? How does the changing the particles size changes surface area of a solid affect the speed of a reaction? Why does changing the particle size or surface area change the speed of a reaction?

Does stirring the mixture affect the speed of a reaction? The descriptions of experiments to do with Parts of the sections of 1. The flask and gas syringe system for measuring the rate of a chemical reaction. You must keep the following variables constant - the volume of hydrochloric acid, the concentration of the hydrochloric acid, the temperature of ALL the reactants, the mass of limestone, and TRY to keep a gentle constant stirring rate as you are noting down the time and volume of carbon dioxide gas formed.

You follow the reaction by measuring the volume of carbon dioxide formed using the gas syringe system. You need a variety of limestone particle sizes e. You follow the reaction by measuring the volume of oxygen gas formed. You can vary the particle size of the catalyst by grinding it down with a pestle and mortar.

You repeat the experiment with different particle sizes of the same catalyst to see its effect on the rate-speed of the catalysed decomposition of hydrogen peroxide. The initial gradient, giving the initial rate of reaction, is the best method i.

BBC Bitesize - GCSE Chemistry - Chemical reactions and tests

Examples of graph data for two experiments where one of the reactants is completely used up - all reacted. The two graph lines represent two typical sets of results to explain how the rate of reaction data can be processed. Graph A for a faster reaction could represent a where the solid reactant was ground into smaller pieces to increase the surface compared to Graph B a slower reaction.

The set of graphs left shows you some typical results. For example the graph lines might represent, in terms of particle size - X a fine powder, Y granules and Z larger lumps. The smaller the solid particles, the greater the surface area exposed to the reactant in solution, the steeper the initial gradient, the faster the reaction.

GCSE Science/Rates of reaction coursework - Wikibooks, open books for an open world

For the effect of surface area particle size on the rate of reaction, under some circumstances graph W could represent the result of taking twice the mass of solid reactant e.

PLEASE note the discussion on stirring further down the page, this also affects the speed of the reaction of hydrochloric acid, whether its powder, granules of lumps! If a solid reactant or a solid catalyst is broken down into smaller pieces the rate of reaction increases.

The speed increase happens because smaller pieces of the same mass of solid have a greater surface area compared to larger pieces of the solid.

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The smaller pieces have an increased surface to volume ratio. Therefore, there is more chance that a reactant particle will hit the solid surface and react.[tags: GCSE Chemistry Coursework Investigation] Free Essays words ( pages) The Rate of Reaction Between Hydrochloric Acid and Marble Chips Essay.

An Investigation into the rate of reaction between Hydrochloric acid and Marble Chips (Limestone). Chemistry Rate of Reaction Coursework for Calcium Carbonate and Hydrochloric Acid.

Investigating the Rate of Reaction - Sodium Thiosulphate and Hydrochloric Acid. Mar 05,  · For choosing a variable, you could change the surface area of the marble chips by using small, medium and large chips (using 1M HCl).

The smaller the chips, the bigger the surface area and the faster the reaction. Alternatively, you could vary the concentration of the acid using M, M.

Gcse chemistry limestone chips coursework

M, M and lausannecongress2018.com: Resolved. Anjelina Qureshi Mrs Gravell Rates of Reaction Coursework Chemistry Year 11 Rates of reaction Introduction A chemical reaction occurs when things change from reactants into products.

REACTION RATE and SURFACE AREA/particle size. F actors the white 'blobs' represent carbon dioxide gas being evolved and the grey lumps the limestone chips, granules or powder. GCSE chemistry IGCSE chemistry revision notes on effect of surface area & particle size on rate of reaction KS4 GCSE Science revision notes on .

My negative reaction was partly due to. gcse chemistry limestone chips coursework - Imgur Images.

Gcse chemistry limestone chips coursework

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