C1.4 - Properties of substances Knowledge Test

Candidate Name:
1) Why are metals good conductors of electricity?
2) In pure metals atoms are arranged in layers. What property does this give them?
3) Why are metals good conductors of thermal energy?
4) Why are pure metals often mixed with other metals or carbon?
5) Why are alloys harder than pure metals?
6) Describe the structure of an ionic compound?
7) Explain why ionic compounds have high melting and boiling points?
8) Under what conditions are ionic compounds able to conduct electricity?
9) What are the structures of different ionic compounds?
10) Substances that consist of small molecules are most commonly which states of matter at room temperature?
11) How does the size of a molecule affect the size of its intermolecular force?
12) Explain why substances that consist of small molecules often have low boiling and melting points
13) Why are covalent compounds unable to conduct electricity?
14) What is the difference between intermolecular forces and intramolecular forces?
15) Which is stronger: A covalent bond or intermolecular force?
16) Why is diamond so hard, in terms of its structure and bonding?
17) Why do metals tend to have high melting and boiling points?
18) How many bonds does each carbon atom form in graphite and how does this impact it's structure?
19) What happens to the spare electron that remains unused in a covalent bond in graphite?
20) Why do giant covalent structures have very high melting and boiling points?
21) Why is graphite soft and slippery?
22) How is graphite similar to metals?
23) What makes graphene useful in electronics and composites?
24) What are the properties of carbon nanotubes and what do their properties make them useful for?
25) What are the properties of graphene in terms of its structure and bonding?
26) What are fullerenes and what is their structure?
27) Name three uses of fullerenes?
28) Diamond, graphite and fullerenes are all examples of what type of structure?
29) How many bonds can an individual atom of carbon form? How many bonds does each carbon form in an atom of a) Diamond b) Graphite
30) Molecules of diamond, graphite and fullerenes are all held together by what type of bonds?
31) Which giant covalent structures are made only from carbon?
32) What was the first fullerene to be discovered and what is its shape?
33) What sort of structures does nanoscience refer to?
34) What is the size of a fine particle and which is smaller, nanoparticles or fine particles?
35) What is the diameter of coarse particles, such as dust?
36) What happens to the size of the surface area to volume ratio of a cube is you decrease the size of the sides by a factor or 10?
37) Why are the properties of nanoparticles different from those for the same materials in bulk?
38) How do nanoparticles compare in size to individual atoms?
39) What are the main applications of nanoparticles?
40) What are the advantages and disadvantages of using nanoparticles?
41) What sort of molecules are polymers?
42) What two monomers form polyester?
43) What type of bond links individual monomers together when forming a polymer?
44) What type of hydrocarbons are used to make polymers?
45) Why are polymers solids at room temperature?
46) What happens in an addition polymerisation reaction?
47) How is a polymer of poly(ethene) produced from ethene? (Show using a diagram)
48) (Chem only) How is the structure of the repeated unit of an addition polymer related to the monomer?
49) (Chem only) How can you identify if you have a polymer or a monomer structure?
50) (Chem only) What occurs during a condensation polymersiation reaction?
51) (Chem only) How many functional groups does each monomer have in the simplest condensation polymerisation reactions?
52) (Chem only) What are the basic principles of condensation polymersiation? (refer to functional groups and repeating units in your answer)
53) (Chem only) When does condensation polymerisation occur?
54) (Chem only) What are the monomers that form the following naturally occuring polymers? 1. proteins 2. starch 3. cellulose
55) (Chem only) What type of polymerisation reaction occurs when amino acids react to form polypeptides? (Include a reason why)
56) (Chem only) What would the equation looks like for the polymerisation of glycine?
57) (Chem only) How are proteins an example of a condensation polymer?
58) (Chem only) What is DNA and what is its function?
59) (Chem only) Why is the structure of DNA described as a polymer?
60) (Chem only) What are the other naturally occuring polymers that are important for life processes?
61) How do the Big Ideas link to this topic?

a) Forces:

b) Particles:

c) Energy:

d) Cells: