C2-Material choices 0.0 / 5 ? ChemistryNanoscienceGCSEOCR Created by: NaanaCreated on: 30-03-14 19:21 Define melting point This is the temperature when the solid material turns into liquid 1 of 13 What is tensile strength? It is how much a material can resist a pulling force 2 of 13 What is compression strength? It is how much a material can resist a pushing force 3 of 13 What is the hardest material found in nature? Diamond. The only material that can cut another diamond is another diamond 4 of 13 What is density? It is a materials mass per unit volume 5 of 13 What is crude oil a mixture of? Hydrocarbon- molecules of chains of carbon and hydrogen atoms 6 of 13 What causes the properties to change of hydrocarbon to change? The length of the carbon chain 7 of 13 What are the 2 important types of bonds in crude oil? 1)Strong covalent bonds- between carbon and hydrogen in each HC molecule. 2) Intermolecular forces of attractive been HC molecules in mixture 8 of 13 How is crude oil separated? By refining through fractional distillation. Hydrocarbons are separated into groups with different boiling points 9 of 13 Name 3 things crude oil is used for? Petrol, diesel, lubricating oil 10 of 13 What happens during polymerisation? Under high pressure, lots of small molecules (monomers) join together to form a long molecule (polymer). 11 of 13 What are polymers used to replace? Natural materials e.g. synthetic fibres (nylon, polyester) used to replace cotton, wool, and silk 12 of 13 What is nanotechnology? Technology dealing with making and using nanoparticles (really tiny particles) 13 of 13
Chemistry 1.2 - Advantages and Disadvantages of Limestone 5.0 / 5 based on 1 rating Teacher recommended
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