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Zad.7 Korzystając z elektroujemności Paulinga określ jaki rodzaj wiązana występuje w cząsteczkach: SO2, NH3, Al2O3, HBr, O3, NaCl, MgCl2, Cu2S, N2O5. Zad. 8 Wyjaśnij na czym polega alotropia pierwiastków i opisz odmiany alotropowe węgla
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Zad. 3 Proces jonizacji atomu wapnia zachodzi zgodnie z podanymi równaniami: Ca + EI → Ca+ + e- EI – pierwsza energia jonizacji Ca+ + EII → Ca2+ + e- EII – druga energia jonizacji Napisz przebieg procesu jonizacji zachodzącego do momentu utworzenia typowego dla danego pierwiastka jonu; litu Li+, glinu Al3+.
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6 Read the advertisement. Library Assistant We are looking for a reliable person to work in the library on Saturday mornings. Your job will include helping customers, returning books to shelves and updating customer files on the computer. The hours are 9.00 a.m. to 12.30 p.m. Please apply in writing to: Chief Librarian Hythe Library Hythe 7 Write a letter of application for the job. Include the following information: • where you saw the advertisement • your experience • why you are a good person for the job proszę nie przetłumaczać tekstu tylko napisać list motywacyjny po angielsku
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Grammar 1 Complete the sentences with the correct form of the verbs in brackets. 1 I _______ (go) to basketball practice yesterday because I missed the bus. 2 _______ (met) the new student in our class yet? She’s really nice. 3 _______ (your brother take) the bus this morning? I know he hasn’t got a car at the moment. 4 My dad _______ (change) his job. He wants to work in town. 5 I _______ (see) the new Johnny Depp film yet. Is it good? 6 We _______ (eat) some amazing food at the new Chinese restaurant last night. 7 I _______ (already do) exercises 1 and 2 but can you help me with exercise 3? 8 _______ (you get) to London next Saturday? By train? 9 I _______ (meet) you outside the cinema at eight. OK? 10 I _______ (buy) a new computer game tomorrow. Mark: ___ /10 2 Complete the text with the correct words. How (1)_______ much / many food shops are there in Kenton? Well today there is one more. (2)_______ the / – Branston’s is (3)_______ a / the new shop in (4)_______ a / the High Street. It’s not very cheap but it’s not (5)_______ a / the most expensive shop in town! It sells (6)_______ some / any really interesting things. It doesn’t sell (7)_______ some / any meat or vegetables but it sells tea from a lot of different countries. It also has (8)_______ the / a small café and you can have (9)_______ the / – breakfast there – with (10)_______ the / a cup of tea, of course! Mark: ___ /10 Vocabulary 3 Complete the sentences with the correct answers. 1 They are going to get married in the local _______. A department store B museum C church 2 His grandfather is _______. A Germanian B German C Germian 3 My mother was _______ in 1960. A born B retired C died 4 It was dangerous to walk to school because it was so _______. A cloudy B rainy C foggy 5 A nurse works in a _______. A kitchen B hospital C library 6 I spoke to him on the phone and then I saw him a few minutes _______. A later B after C past 7 Did you _______ a lot of friends in the USA? A take B make C spend 8 It’s really healthy to eat _______. A hot dogs B pastry C apples 9 You make chips from _______. A tomatoes B potatoes C onions 10 I’m going to take a(n) _______ from the airport to the hotel. A underground B plane C taxi
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Reading 4 Read the text. The end of a long journey Yesterday was an important day for Thomas Burns from Portsmouth. He retired after 45 years as a bus driver in the city. Here he writes about the changes he has seen over the years. ‘Over the years a lot of things have changed in Portsmouth and I think it’s more difficult to be a bus driver today than before. There are more cars, more cyclists, more traffic jams and more people in a hurry! I’ve seen a lot of changes in the town centre too. When I started you could drive along the High Street. Now you can’t. It’s for people on foot! There are lots of roads you can’t drive along. Another change is that 40 years ago we had conductors. Conductors were people who worked on the bus too and they walked up and down the bus and sold the tickets. Today the driver has to sell tickets. Also, the conductors watched the passengers for any trouble. Today we have CCTV cameras instead! But a CCTV camera can’t tell a teenager to get off the bus! The passengers haven’t changed a lot. I’ve met some really nice people and some very rude people too. But that’s life, isn’t it?’ 5 Are the sentences true or false? 1 People want to get to places quickly these days. ___ 2 There is more traffic on the roads today than before. ___ 3 The city centre is the same as it was when Thomas started as a driver. ___ 4 There is more trouble on the buses today than there was before. ___ 5 All Thomas’s passengers were polite. ___
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Zad. 5 Określ ilość cząstek elementarnych w następujących atomach i jonach: Mg2+, O, Cl-, S, S2-.
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Zad.2 Uzupełnij równania reakcji przemian jądrowych: a) 21986Rn → ß + ……… b) 21082Pb →21083Bi + ………. c) 23793Np → 42He + ……. d) 23492U → α + …… e) …………. → 7733As + ß
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Zad.1. Oblicz średnią masę atomową magnezu wiedząc, że zawiera on izotopy: 24Mg (78,6%), 25Mg (10,11%) oraz 26Mg (11,29%).
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