Week 5 - PROPERTIES OF MATERIALS - Key 7. Listening: Listen to some properties of materials. Make notes in the form of a table. From Nucleus of General Science. Unit 1, Listening Practice 2. material property verbal structure Example: salt soluble dissolves easily glass hard difficult to scratch rigid it doesn´t bend easily transparent you can see through it brittle wood soft easy to scratch and to cut combustible it burns easily stone and concrete non-combustible Listening Transcript Glass has many useful properties. For example, it is hard, difficult to scratch, it is rigid, it doesn´t bend easily and it is transparent – you can see through it. But glass is not a tough material, in fact it is very brittle. Sometimes glass is made specially tough, and this glass is used for example in car windows. Unlike glass, wood is a soft material. It is easy to scratch wood and to cut it. Wood is a good material for building, but it is combustible – it burns easily. It is therefore more dangerous than other building materials, which are non-combustible – for example stone and concrete. 9. Some other properties of materials. Form adjectives from these nouns. Czech translation Noun Adjective a) pružnost elasticity elastic b) křehkost fragility fragile c) tažnost malleability malleable d) kujnost ductility ductile e) vodivost conductivity conductive f) žáruvzdornost heat-resistance heat-resistant g) zápalnost flammability flammable h) jedovatost, toxicita toxicity toxic i) reaktivita reactivity reactive j) netečnost inertness inert k) lehkost lightness light l) těžkost heaviness heavy m) savost, absorpčnost absorbency absorbent n) viskozita, lepkavost viscosity viscous o) hustota density dense p) trvanlivost, odolnost durability durable q) odolnost proti korozi corrosion resistance corrosion resistant r) síla strength strong 10. Choose the right word in a sentence: a) A conductive / conductivity material can be used to conduct electricity. b) If a material is easy to stretch under stress, we call it elastic / elasticity. c) If you want to improve durable / durability of a machine, clean it regularly. d) Hard / hardness is an important property of steel. e) Concrete is used for building because it is strong / strength.