Flashcards
MODULE 3.1 COMBUSTION AND CORROSION REACTIONS
Flashcards do conjunto (21)
- 1Module 3.1 Combustion and CorrosionBy Rahma Abdelgadir (9B)
- 2When does combustion happen?Happens when anything burns or explodes.
- 3When does corrosion happen?Happens when a metal such as copper or an alloy e.g steel changes into something else.
- 4What happens in a chemical reaction?New substances form and old ones leave/disappear.
- 5What are reactants?Old substances you started with before the chemical reaction.
- 6What are products?The new substances formed by the chemical reaction.
- 7What does a chemical equation do?Way of showing what happens to different substances in a chemical reaction.
- 8How is a chemical reaction written?Always written in this form;
reactants -> products. - 9What is a word equation?A simple description of what is happening in a reaction.
- 10An example of a word equation.Nitrogen gas + Hydrogen gas
->ammonia - 11What is a balanced equation?More detailed way of showing whats happening in a reaction.
- 12An example of a balanced equation.N2 + 3H2 -> 2NH3
- 13What are coefficients?Big numbers in fronton chemicals within a balanced equation.
- 14What is endothermic reaction?A reaction thats absorbs heat, takes it from its surroundings and making them feel colder.
- 15What happens in an endothermic reaction?Products have more energy than the reactants.
- 16Example of an endothermic.Ice pack on an injury
- 17What is an exothermic reaction?Reaction thats releases energy.
- 18What happens in an exothermic reaction?The reactants have more energy than the products
- 19What happens during an exothermic reaction?Energy gets released into the surroundings, usually as heat and/or light.
- 20What is combustion?Rapid reaction with oxygen that releases energy.
- 21When does combustion occur?Occurs when something
Informações
- Descrição
- Science; Corrosion and Combustion!
- Criado por
- Rahma Abz
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- 28
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