Chemistry: Additional and Triple

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Additional Chemistry Questions
1. Describe the structure of an ionic compound.
2. Give the properties of ionic compounds.
3. Give and explain the properties of simple molecules.
4. Give the properties of graphite.
5. Define and give two uses of fullerenes.
6. Give the properties and structure of metallic compounds.
7. What are alloys and how do they work?
8. Why do thermosoftening polymers change shape.
9. Give three advantages of instrumental methods.
10. Describe gas chromatography.
11. What do the number / position of peaks on the output show?
12. What gives the relative molecular mass?
13. Describe the empirical formula.
14. Why is it not always possible to obtain the yield.
15. Find the equation that says the amount of products and reactants.
16. How does the temperature effect the rate of reaction?
17. How do concentration and pressure affect the rate of reaction?
18. Give three pros and cons of catalysts.
19. What is electrolysis? Describe the method.
20. What is produced at the cathode?
21. Describe the electrolysis of aluminium.
22. Give a use of hydrogen, chlorine and sodium hydroxide.
23. Give the neutralisation ionic formula.
24. Describe the four acidic reactions.
25. Describe how to make salts from a base.

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Additional Chemistry Answers
1. A giant structure of ions held together by strong electrostatic forces between oppositely
charged ions.
2. Can only carry a current when molten or dissolved as the ions are free to move around and
carry a current. High melting points due to the large amounts of energy needed to break the
3. Small structures that don't conduct electricity as the molecules have no overall charge.…read more

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Triple Chemistry Questions
1. Compare Newlands and Mendeleev's periodic tables.
2. Describe the properties of group 1 metals.
3. Describe the properties of the Halides.
4. Explain what scale is.
5. Explain what scum is.
6. Describe the three ways of softening and hard water.
7. Describe how we get clean water.
8. What are the issues associated with fluorine or chlorine?
9. Give the test and results for sulphates.
10. Give the test and results for halides.
11.…read more

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Triple Chemistry Answers
1. Both ordered atoms in order of atomic mass. Newlands mixed up metals and non-metals and
left no gaps so his groups contained elements with dissimilar properties. Mendeleev put
elements into groups and left gaps
2. As you go down group 1, reactivity increase as there is increased shielding and an increased
distance from the nucleus which makes it easier for the last electron to break away.
They have a low density and form white compounds that dissolve to form colourless solutions.…read more

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The raw materials for this process are hydrogen and nitrogen. Hydrogen is obtained by
reacting natural gas - methane - with steam, or through the cracking of oil. Nitrogen is
obtained by burning hydrogen in air. Air is 80 per cent nitrogen; nearly all the rest is oxygen.
When hydrogen is burned in air, the oxygen combines with the hydrogen, leaving nitrogen
behind.…read more


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