Flashcards

Properties of materials: hydrocarbons and fossil fuels

Felicitypenn English 19 cards

Cards in this deck (19)

11 Hydrocarbons are made of...1) Hydrogen, carbon.
22 Match these properties to their meanings.. BRITTLE: you can twist and draw this into wires and fibers. TOUGH it: doesn't deform much before it breaks. STIFF: you don't need much force to change it's shape. FLEXIBLE: you need a lot of force to change it's shape. DUTILE: keeps a new shape when you deform it. MALLEABLE: it's strong and doesn't change it's shape. PLASTIC: can be squeezed and bent into a new shape without breaking.2) brittle: it doesn't deform much before it breaks.
tough: it's strong and doesn't change it's shape.
stiff: you need a lot of force to change it's shape.
flexible: you don't need much force to change it's shape.
Ductile: you can twist and draw this into wires and fibers.
Malleable: can be squeezed and bent into new shapes with out breaking.
plastic: keeps a new shape wen you deform it.
33 Name 2 properties of rubber.3) flexible, solft
44 fibers can be drawn into ______ and then woven together.4) thread
55 name 3 fossil fuels.5) crued oil, gas, coal
66 how are fossil fuels made? how long dose it take?6) 1 million years. layers upon layers.
77 what's the difference between natural and synthetic materials?7) natural grows on its own with no help. synthetic is plastic reused.
88 name 3 natural materials?8) wool, cotton, wood
99 name 2 synthetic materials?9) plastic bags and legs.
1010 the melting point of chocolate is 30'c what dose that mean10) it turns into a liquid
1111 the melting point of plastic is around 200.c. why is it so much higher than chocolate?11) beaucse plastic takes longer and is a synithic materials
1212 what key word means that a material will last a long time?12) stiff, hard, strong
1313 what dose it mean if a material is elastic?13) easy to pull. make things with.
1414 both tension and compression and deform a material. what is the difference between theses two forces?14) compression is pushing together and tension is pulling
1515 name 2 properties of rubber15) hard, flexible
1616 fibers, plastics, rubbers: which one keeps it's shape best? is the most tough and long-lasting?is most flexible
1717 how do we refine crude oil?17) by factional and distillation
1818 how dose the temperature change as you go up the fractionating Colum?18) it cools down. $18 how dose the temperature change as you go up the fractionating Colum?$
1919 what are crude oil fractions used for? give at least 3 users?19) petrol used in cars, kerosette used in jets, desial oil used for busses. $19 what are crude oil fractions used for? give at least 3 users?$