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15 Cards in this Set
- Front
- Back
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What are the two types of changes? |
Physical and chemical |
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what are characteristics of physical changes? |
Properties of substance change Easily reversed Particles the same No new substances |
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What are characteristics of chemical changes? |
New substances produced Particles change and rearrange Not easily reversed |
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What is the process of a chemical reaction? |
Bonds between reactants break New bonds form Product is formed |
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what are 6 signs of a chemical reaction? |
Gas or precipitate forms Odour is produced Fizzing/ bubbling (gas produced) Temperature change Colour change Sound or light produced
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What are reactants? |
The things that react together |
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What are products? |
What is formed by the reaction |
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How many types of chemical reactions are there? |
4 |
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what are the four types of chemical reactions? |
Synthesis Decomposition Combustion Displacement |
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What is a synthesis reaction? |
Two subtances combine into single substance |
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What is a decomposition reaction? |
Reactant breaks down into two substances |
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What is a combustion reaction? |
Oxygen is part of reaction |
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What is a displacement reaction? |
Metals and non-metals swap partners to form new combinations |
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How do you write chemical word equations? |
Reactants on left side of arrow Products on right side of arrow Both separated by plus signs Non-substances written above arrow |
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What are examples of chemical change? |
Rusting (oxidising) Burning (combustion) |
