Term
| Diamond is used for cutting tools because it is ...... |
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| Copper can be used for electrical wiring becasue it has .......... |
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| Graphite can be used in pencils because it has ........ that slide over each other |
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Term
| In the Haber process nitrogen from the ............ is reacted with hydrogen from ................ |
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Term
| Nitrogen and hydrogen are passed over a hot catalyst made of........ |
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| How is ammonia gas turned into a liquid? |
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Definition
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| How is the rate of reaction in the Haber process increaced? |
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Definition
high temperature
high pressure
using a catalyst |
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ammonia + ____________ acid --> ammonium nitrate + water |
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Definition
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Term
| How does the company save money on raw materials? |
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Definition
| by recycling the unused nitrogen and hydrogen |
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Term
| What is ammonium nitrate used for? |
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Term
| A reaction that gives out heat is called ....... |
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Definition
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Term
| a reaction that takes in heat from its surroundings is called......... |
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Term
| What is the formula of the compund formed when Na+ ions react with CO32- ions |
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Definition
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Term
| When chorine forms an ions will it gain or loose an electron |
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Definition
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Term
| Give three explanations for the increace in rate of reaction when the temperature is increaced |
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Definition
any three from:
particles gain energy
move faster
collide more often
collide with more force
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Term
What is the relative formula mass of CaCO3
(C=12,Ca=40,O=16) |
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| What is the percentage calcium in CaCO3 |
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Definition
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