chemistry 0.0 / 5 ? ChemistryReactionsNational 5SQA Created by: lana8Created on: 10-04-17 15:31 signs of chemical reaction colour change, change in temperature, gas given off, solid formed 1 of 9 what is produced in all chemical reactions ? a new substance 2 of 9 what is the substance you start with in a chemical reaction called? reactants 3 of 9 what is the substance called that is formed in a chemical reaction? product 4 of 9 what happens in an EXOTHERMIC reaction? heat energy exits so the temperature of the surrounding increases 5 of 9 what happens in an ENDOTHERMIC reaction? heat energy enters so the temperature of the surrounding decreases 6 of 9 the rate of reaction is a measure of what? speed of a reaction 7 of 9 how can the rate of a chemical reaction be changed? changing : particle size, concentration, temperature or using catalyst 8 of 9 what happens if you decrease particle size and why? rate of reaction will increase because more surfaces are available for reactions to take place on 9 of 9
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