Topic 1: getting the most from reactants

Question 1

suggest some reasons for making new products

Answer 1

-gap in the market
-demand for it
-improve on an old one e.g. drugs with fewer side effects, less toxic pesticides
-profit-‘new and improved’ versions/updates

Question 2

define raw material

Answer 2

a basic material that can be used as a source of chemicals

Question 3

define feedstock

Answer 3

a reactant from which other chemicals are made. feedstock chemicals are extracted from raw materials

Question 4

what is yeild

Answer 4

the mass of product relative to the mass of raw materials put in

Question 5

environmental considerations include

Answer 5

-minimising waste
-avoiding the use or production of toxic substances
-designing products that will biodegrade if possible

Question 6

factors influencing industrial process design include

Answer 6

-availability, sustainability and cost of feedstock
-opportunities for recycling
-energy requirements
-marketability of by-products
-product yield