Match the healthy/unhealthy habits with their pictures. » Number of connections: 4 live an active life 1 eat fast food > stay up late ) sleep enough )
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 chemical nature of a plastic is defined by the monomer (repeating unit) that makes up the chain of the polymer. Polyethene is a polyolefin; its monomer unit is ethene (formerly called ethylene). Other categories are acrylics (such as polymethylmethacrylate), styrenes (such as polystyrene), vinys (such as polyvinyl chloride (PVC)), polyesters, polyurethanes, polyamides (such as nylons), polyethers, acetals, phenolics, cellulosics, and amino resins. 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.The giant molecules of which polymers consist may be linear, branched, or cross-linked, depending on the plastic. Linear and branched molecules are thermoplastic (soften when heated), whereas cross-linked molecules are thermosetting (harden when heated).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. The best insulators now are epoxy resins and teflon. Teflon or polytetrafluoroethene (PTFE) was first made in 1938 and was produced commercially in 1950.Plastics can be classified into several broad types.1. Thermoplastics soften on heating, then harden again when cooled. Thermoplastic molecules are also coiled and because of this they are flexible and easily stretched.Typical example of thermoplastics is polystyrene. Polystyrene resins are characterized by high resistance to chemical and mechanical stresses at low temperatures and by very low absorption of water. These properties make the polystyrenes especially suitable for radio-frequency insulation and for parts used at low temperatures in refrigerators and in airplanes. PET (polyethene terephthalate) is a transparent thermoplastic used for soft-drinks bottles. Thermoplastics are also viscoelastic, that is, they flow (creep) under stress. Examples are polythene, polystyrene andPVC.2. Thermosetting plastics (thermosets) do not soften when heated, and with strong heating they decompose. In most thermosets final cross-linking, which fixes the molecules, takes place after the plastic has already been formed.Thermosetting plastics have a higher density than thermoplastics. They are less flexible, more difficult to stretch, and are less subjected to creep. Examples of thermosetting plastics include urea-formaldehyde or polyurethane and epoxy resins, most polyesters, and phenolic polymers such as phenol-formaldehyde resin.3. Elastomers are similar to thermoplastics but have sufficient cross-linking between molecules to prevent stretching and creep.
charity is quite popular nowadays. people have become more open and kind-hearted. on the whole, charity means voluntary giving of help to those who are in need. charitable giving can include the act of giving money, goods, time, attention and kindness to the unfortunate most forms of charity mean providing basic items of necessity, such as food, water, clothing, shelter, healthcare and else.
there are so many charitable organizations in the world today they allow people to donate either directly or online, through websites. charitable organizations also include orphanages, food banks, religious institutes and hospitals for the poor. donating things you don’t use anymore is one of the forms of charity. not everyone is lucky enough to have lots of toys or warm clothes for winter. sometimes people simply can’t find the job to earn enough money. others are sick, disabled or elderly and can’t get around on their own. these are the cases when charity helps.
перевод:
благотворительность является довольно популярной в наши дни. люди стали более открытыми и добрыми. в целом, благотворительность означает добровольное предоставление тем, кто в ней нуждается. благотворительные пожертвования могут включать в себя акт дарения денежных средств, товаров, времени, внимания и доброты к несчастному большинство форм благотворительности означают предоставление основных предметов необходимости, например, продуктов питания, воды, одежды, крова, здравоохранения и т.д.
в современном мире существует так много благотворительных организаций. они позволяют людям жертвовать что-либо напрямую, либо в интернете через вебсайты. к благотворительным организациям относятся детские дома, продовольственные банки, религиозные институты и больницы для бедных. пожертвование вещи, которые вам больше не нужны, является одной из форм благотворительности. не всем повезло иметь много игрушек или теплую одежду на зиму. иногда люди просто не могут найти работу, чтобы заработать достаточно денег. другие больны, являются или пожилыми и не могут все делать сами. это те случаи, когда благотворительность .
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 chemical nature of a plastic is defined by the monomer (repeating unit) that makes up the chain of the polymer. Polyethene is a polyolefin; its monomer unit is ethene (formerly called ethylene). Other categories are acrylics (such as polymethylmethacrylate), styrenes (such as polystyrene), vinys (such as polyvinyl chloride (PVC)), polyesters, polyurethanes, polyamides (such as nylons), polyethers, acetals, phenolics, cellulosics, and amino resins. 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.The giant molecules of which polymers consist may be linear, branched, or cross-linked, depending on the plastic. Linear and branched molecules are thermoplastic (soften when heated), whereas cross-linked molecules are thermosetting (harden when heated).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. The best insulators now are epoxy resins and teflon. Teflon or polytetrafluoroethene (PTFE) was first made in 1938 and was produced commercially in 1950.Plastics can be classified into several broad types.1. Thermoplastics soften on heating, then harden again when cooled. Thermoplastic molecules are also coiled and because of this they are flexible and easily stretched.Typical example of thermoplastics is polystyrene. Polystyrene resins are characterized by high resistance to chemical and mechanical stresses at low temperatures and by very low absorption of water. These properties make the polystyrenes especially suitable for radio-frequency insulation and for parts used at low temperatures in refrigerators and in airplanes. PET (polyethene terephthalate) is a transparent thermoplastic used for soft-drinks bottles. Thermoplastics are also viscoelastic, that is, they flow (creep) under stress. Examples are polythene, polystyrene andPVC.2. Thermosetting plastics (thermosets) do not soften when heated, and with strong heating they decompose. In most thermosets final cross-linking, which fixes the molecules, takes place after the plastic has already been formed.Thermosetting plastics have a higher density than thermoplastics. They are less flexible, more difficult to stretch, and are less subjected to creep. Examples of thermosetting plastics include urea-formaldehyde or polyurethane and epoxy resins, most polyesters, and phenolic polymers such as phenol-formaldehyde resin.3. Elastomers are similar to thermoplastics but have sufficient cross-linking between molecules to prevent stretching and creep.
Объяснение:
ответ:
charity is quite popular nowadays. people have become more open and kind-hearted. on the whole, charity means voluntary giving of help to those who are in need. charitable giving can include the act of giving money, goods, time, attention and kindness to the unfortunate most forms of charity mean providing basic items of necessity, such as food, water, clothing, shelter, healthcare and else.
there are so many charitable organizations in the world today they allow people to donate either directly or online, through websites. charitable organizations also include orphanages, food banks, religious institutes and hospitals for the poor. donating things you don’t use anymore is one of the forms of charity. not everyone is lucky enough to have lots of toys or warm clothes for winter. sometimes people simply can’t find the job to earn enough money. others are sick, disabled or elderly and can’t get around on their own. these are the cases when charity helps.
перевод:
благотворительность является довольно популярной в наши дни. люди стали более открытыми и добрыми. в целом, благотворительность означает добровольное предоставление тем, кто в ней нуждается. благотворительные пожертвования могут включать в себя акт дарения денежных средств, товаров, времени, внимания и доброты к несчастному большинство форм благотворительности означают предоставление основных предметов необходимости, например, продуктов питания, воды, одежды, крова, здравоохранения и т.д.
в современном мире существует так много благотворительных организаций. они позволяют людям жертвовать что-либо напрямую, либо в интернете через вебсайты. к благотворительным организациям относятся детские дома, продовольственные банки, религиозные институты и больницы для бедных. пожертвование вещи, которые вам больше не нужны, является одной из форм благотворительности. не всем повезло иметь много игрушек или теплую одежду на зиму. иногда люди просто не могут найти работу, чтобы заработать достаточно денег. другие больны, являются или пожилыми и не могут все делать сами. это те случаи, когда благотворительность .