chapter 1
Quiz by Martin Vaclavik
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17 questions
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- Q1What is the difference between a synthetic and a natural materialsynthetic is not naturalsome synthetic materials occur in natureonly synthetic materials occur in naturesynthetic material is human-made while a natural material comes from naturally occurring plants or animals.60s
- Q2What is a metal alloya combination of a natural and synthetic materiala mixture of one metal with another to form one stronger than the original60s
- Q3What is one way that synthetic chemicals have helped farmers produce more food.farmers use diesel instead of gasoline in their trucksfarmers have chemistry labs to help them produce genetically modified cropsfarmers drive trucks to town instead of riding horsesmany products are treated with chemicals to increase their shelf life60s
- Q4What is one way that synthetic chemicals have helped farmers produce more food.chemicals are used to help farmers plant more seedchemicals help produce survive the trip to the consumerchemicals are easier to digest than natural foodchemicals enhance the flavour of the grain farmers produce60s
- Q5What is one way that synthetic chemicals have helped farmers produce more food.instead of pulling or cultivating weeds, farmers use herbicides to kill weeds that compete with plant crops for available water and nutrientslivestock don't need as much feed as they did years agothere are not as many insects and pest as there were years agotoday, pests such as grasshoppers, are eating more crops than in the past60s
- Q6What is one way that synthetic chemicals have helped farmers produce more food.pesticides are used to kill weeds that would invade the cropssynthetic chemical fertilizer makes the crops more pest resistantpest only eat crops treated with synthetic chemical fertilizerspesticides are used to kill insects that eat plant crops60s
- Q7What is soap and how is it made?soap is a compound that is made up of dissoled lye and lard and occurs in nature.soap is a compound that is made up of many small identical sub-molecules and occurs in nature.soap consists of a two-ended molecule; one end of the molecule dissolves in grease and the other end dissolves in water. It is made by dissolving lye (a strong base) in water, heating lard (grease), and then adding the lye to the melted grease and allowing the mixture to cool.soap is a compound that is made up of many small identical sub-molecules. It is made from lye and lard.60s
- Q8Identify a synthetic fibre and explain how it is used to benefit humanssilk — used in clothingspider web silk — a spider’s tool for capturing preypolyester — fabric used to make clothes that dry quickly and do not need ironingrubber — used to make latex and other products60s
- Q9What is a polymer?A polymer is a compound that is made up of many small identical sub-moleculesA polymer is a compound that is the product of neutralization reactionA polymer is a synthetic or man made fibreA polymer is produced when soap reacts with the oils on your skin60s
- Q10Which list only contains synthetic polymers?latex, neoprene, polyethylene, polystyrene, polyurethaneneoprene, polyethylene, polystyrene, polyurethanerubber, starch, neoprene, polyethylenesilk, spider web, neoprene60s
- Q11Which list only contains natural polymers?spider web, starch, latex, poly ethylenesilk, spider web, starch, polyurethanesilk, DNA, rubber,silk, spider web, starch, DNA, latex60s
- Q12Which of the following is not an example of an alloy?steelbronzegoldjewelry60s
- Q13What is the difference between WHMIS and MSDSone refers to workplace, the other to householdone is a label, the other is a data sheetone lists the dangerous products, the other describes how to dispose of themthere is no difference. They are both dangerous symbol labels60s
- Q14what are HHPS symbols used forsafe food to eatto warn consumers of hazardous chemicals or reactions that may occur when using common productshazardous symbolschemicals that may be dangerous or safe60s
- Q15what is an example of an alloySterling silverNylonstainless steelGold60s