Сабақтың тақырыбы: «Plastics»
carbon – көміртек flexible –
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30.04.20 Plastics
| carbon – көміртек flexible – майысқақ
fibre – талшық,жіп chain –қатар,шынжыр identical –бірдей molecule – молекула branch – айыр to synthesize - синтездеу chemicals –химиялық заттар to soften –жұмсарту cellulose – клетчатка, целлюлоза thermosetting plastic - термореактивті пластмас to harden – қатты қылу wax - балауыз coil –шиыршық stretched – созыңқы transparent- мөлдір rubber –резина to decompose –ыдырау,іру to subject –ұшырату(подвергать) polyurethane - полиуретан resin-шәйір(смола) similar –ұқсас sufficient –жеткілікті to prevent –алдын Task 2. now guys lets read the text and try to understand it. Тапсырма №3. Текстті оқып, аударамыз Plastics Plastics are non-metallic, synthetic, carbon-based materials. They can be moulded, shaped, or extruded into flexible sheets, films, or fibres. Plastics are synthetic polymers. Polymers consist of long-chain molecules made of large numbers of identical small molecules (monomers). The molecules can be either natural-like cellulose, wax, and natural rubber-or synthetic – in polyethene and nylon. In co – polymers, more than one monomer is used. Most plastics are synthesized from organic chemicals or from natural gas or coal. Plastics are light-weight compared to metals and are good electrical insulators. Plastics can be classified into several broad types:
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