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why does grinding a solid into a powder increase reaction rate

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What Factors Affect the Speed of Chemical Reactions ...

But if you take that same piece of coal, grind it up very, very fine, throw it up into the air, and strike a match, you'll get an explosion because of the increased surface area of the coal. Concentration of chemical reactants. ... How catalysts increase chemical reaction rate.

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COLLATED QUESTIONS – REACTION RATES ANSWERS

COLLATED QUESTIONS – REACTION RATES . ANSWERS . 2014: 2 BALLOONS ... The experiment is repeated but this time the same mass of marble chips is crushed into a powder ... the acid particles and the ions in the calcium carbonate powder, leading to an increase in the rate of the reaction and the reaction will be completed sooner.

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Can You Change the Rate of a Chemical Reaction by Changing ...

Do you think changing the particle size will have a measurable effect on the chemical reaction rate? Will smaller particles speed up or slow down the reaction? Bibliography. Bayer HealthCare. (2005). ... A tablet ground into powder. To do this, fold a single tablet to be ground inside a clean piece of paper. Place the folded paper on a piece of ...

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Why Does Stirring Affect the Rate of Dissolving ...

Therefore, grinding a substance down into smaller particles makes it easier to dissolve. Heating the solution causes the solvent to dissolve faster However, gasses become less soluble when the temperature increases.

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How can rate of reaction be increased? | Socratic

If a reactant is a solid, grinding it into smaller particles will increase the surface area. The more surface area on which collisions can occur, the faster the reaction. INCREASE THE TEMPERATURE Usually, an increase in temperature causes an increase in the reaction rate.

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SCIENCE: EIGHTH GRADE CRT FIRST QUARTER

Grinding a solid reactant into a powder, stirring, increasing temperature, etc 7.1 What happens to the reaction rate when reactant particles are able to collide more often and with more energy?

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The Effect of Surface Area on Reaction Rate - Ewart

The Effect of Surface Area on Reaction Rate ... (25) of solid blue molecules in each diagram. For a reaction to happen a red molecule must bump into a blue molecule. ... If you grind big crystals into a powder do you make the total surface area of the crystals bigger or smaller?

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Honors Chemistry B Flashcards | Quizlet

Honors Chemistry B. STUDY. ... Why can grinding a solid into a fine powder increase the rate of reaction? the powder has a greater surface area than the solid. ... In a first-order reaction, how does the rate change if the concentration of the reactant decreases to one-third its original value?

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Rates of chemical reactions and the effects of temperature ...

It should be clear that if you can increase reaction rates by increasing temperature you can decrease reaction rates by lowering the temperature. You do this every time you put something in the refrigerator.

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How does surface area affects rate of reaction? - Quora

The surface area of solid reactants is increased by cutting the reactant into pieces or grinding it.! An example in daily life is that powdered sugar dissolves faster in water than crystals of sugar! Thus more surface area increases the rate of a reaction!

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12 LABORATORY SAMPLE PREPARATION

12 LABORATORY SAMPLE PREPARATION 12.1 Introduction ... increase the surface area and speed up the reaction between the sample and the fluxing agent or. Laboratory Sample Preparation ... monly, the grinding process results in an increase in moisture content due to an increase in

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why does grinding a solid into a powder increase reaction rate

why does grinding a solid into a powder increase reaction rate Offer any size-reduction requirements including quarry, aggregate, and different kinds of minerals.

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Factors Affecting Reaction Rates - Welcome to CDLI

The rate of reaction of a solid substance is related to its surface area. In a reaction between a solid and an aqueous/liquid/gas species, increasing the surface area of the solid-phase reactant increases the number of collisions per second and therefore increases the reaction rate.

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Gunpowder - Wikipedia

Gunpowder, also known as black powder to distinguish it from modern smokeless powder, is the earliest known chemical explosive.It consists of a mixture of sulfur (S), charcoal (C), and potassium nitrate (saltpeter, KNO 3).The sulfur and charcoal act as fuels while the saltpeter is an oxidizer. Because of its incendiary properties and the amount of heat and gas volume that it generates ...

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How does an increase in surface area affect the rate of a ...

Rates of reaction increase according to the frequency of collisions between the reacting species. If you have, for example, a solid reactant which is in contact with an aqueous solution of another, increasing the surface area to volume ratio, by grinding the solid into a finer powder, for example, means that the same number of moles of reactant now exist in a greater surface area form.

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BBC - Standard Grade Bitesize Chemistry - Speed of ...

Measuring the speed of a reaction. ... gunpowder and steel wool that show the effect of particle size and concentration on reaction rate. Video: Particle size and concentration.

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Growth & Development - California State University, Northridge

The reaction rate of a general chemical reaction, aA + bB → pP + qQ, can be defined as: For rusting, it is difficult to write an equation due to the complexity of the reaction. Thus, we can express the reaction like the following.

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Melting Point Determination

changes from a solid to a liquid state. Pure crystalline substances have a clear, ... user-programmable fixed rate until the sample in the tube transitions into the liquid state. While determining a melting point, several observations and the ... homogeneous samples must be crushed into a fine powder in a mortar. An agate, glass or alumina ...

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The Chemistry of Gunpowder | Compound Interest

A mixture of solid and gaseous products are produced by the reactions, along with a very small amount of water. The obvious use for black powder in firework is as the 'lift charge', which propels the firework into …

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GAMS Chalk and Vinegar Experiment by Grace Isford on Prezi

 · Step 3: Grind the solid chalk into a fine powder using a mortar and pestle. Step 4: Place the powder chalk into the beaker of vinegar. Step 5: Time the reaction from the moment of impact of the chalk and vinegar until the time that the reaction stops bubbling, and observe reaction.

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What is used to grind solids into a powder

What does grinding solid reactants into powder - do to the reactant particles? The powdered form of a solid reactant has an aggregate surface area that is many times greater than the solid block ...

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The Effect of Surface Area on Reaction Rate - Ewart

The Effect of Surface Area on Reaction Rate ... (25) of solid blue molecules in each diagram. For a reaction to happen a red molecule must bump into a blue molecule. ... If you grind big crystals into a powder do you make the total surface area of the crystals bigger or smaller?

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Activation Energy and Temperature Dependence | Boundless ...

Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction. ... This is because the liquid and the solid can bump into each other only at the liquid-solid interface, which is on the surface of the solid. ... Catalysts are substances that increase reaction rate by lowering the activation ...

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Experiment 5 Kinetics: The Oxidation of Iodide by Hydrogen ...

Kinetics: The Oxidation of Iodide by Hydrogen Peroxide ... immediately turned into iodide ions which are colorless. The thiosulfate ions are the limiting reagent. So once all the thiosulfate ions are consumed, iodine starts ... there is another way to increase the rate of a reaction. Some chemical species can increase the rate of a

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Factors Affecting Reaction Rates | Chemistry

A finely divided solid has more surface area available for reaction than does one large piece of the same substance. Thus a liquid will react more rapidly with a finely divided solid than with a large piece of the same solid.

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Reaction of zinc with iodine- Learn Chemistry

1 The solid iodine should be powdered by grinding in a mortar in a fume cupboard. For a class experiment a stoppered test-tube containing 0.5 g of powdered iodine should be supplied to …

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REACTION RATES - NASA

The rate of a chemical reaction is the speed with which reactants are converted to products. Collision theory is used to explain why chemical reactions occur at different rates. Collision theory states that in order for a reaction to proceed, the

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THE EFFECT OF SURFACE AREA ON REACTION RATES

This page describes and explains the effect of changing the surface area of a solid on the rate of a reaction it is involved in. This applies to reactions involving a solid and a gas, or a solid and a liquid.

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