SZYBKO, DAJE NAJ III. Przeczytaj listy i wybierz właściwą odpowiedź A, B lub C. Postaw X przy wybranej odpowiedzi. 0 What did Cameron do with his parents last night? A played video games B watched films on his laptop C watched television X 1 What time did Cameron get up at night? A at 9 o’clock B at 10 o’clock C at 11 o’clock 2 What was Cameron doing at 1 a.m.? A He was sleeping. B He was watching TV. C He was talking to her parents. 3 How much sleep do adults need? A eight hours B nine hours C twelve hours 4 One good thing about drinking caffeine is that A you feel less sleepy. B you get a stomachache. C it helps your heart. 5 Polly says that Cameron should A brush his teeth more and lose weight. B go to bed a bit later when he’s tired. C not drink energy drinks. Dear Polly Last night I watched TV with my parents. Then I went to bed at 9 o’clock but I couldn’t sleep. Two hours later I still didn’t feel sleepy so I got up, had another energy drink and continued watching TV. My parents were already in bed. I didn’t fall asleep until 2 a.m.! I don’t want to stay up late, I just can’t go to sleep. What’s the matter with me? Cameron, 15 Dear Cameron Teenagers need more sleep than adults (nine hours per night, one more than adults) but less than children (twelve hours). Scientists think that teenagers are getting less sleep than before. Energy drinks can be part of the problem. They have lots of sugar and calories, which give you energy. But sugar is also bad for your weight and your teeth! Energy drinks are also often full of caffeine. You find caffeine in tea and coffee. It makes you feel less tired and sleepy, but it can also make you feel nervous, give you stomachaches and headaches and can even cause problems with your heart. So my advice is not to stay up late until you feel sleepy but go to bed early. You should also stop drinking energy drinks. This will help your teeth and your weight as well, if that’s a problem for you.
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1. Zaznacz zdanie fałszywe. (… / 1p)A. Pierwiastek chemiczny jest zbiorem takich samych atomów.B. Pierwiastek chemiczny to substancja prosta, której nie da się rozdzielić na prostsze składniki.C. 1 unit (1 u) to 112masy atomu węgla.D. Masa atomu siarki wynosi 33 u.2. Wskaż symbol powłoki elektronowej, która może pomieścić maksymalnie 32 elektrony. (… /1p)A. K B. L C. M D. N3. Uzupełnij zdania. (… / 3p)Samorzutne wnikanie cząsteczek jednej substancji między cząsteczki drugiej substancji nazywamy ………………………… . Zjawisko to jest dowodem na………………………………. budowę materii. Obserwujemy je m. in. podczas:a) ………………………………………………….. ,b) …………………………………………………...,c) ………………………………………………….......................................................................... ,John Dalton jest twórcą teorii ………………………………………………………………….. .4. Oblicz masy cząsteczkowe substancji o podanych wzorach sumarycznych i zaznacz poprawne odpowiedzi. Skorzystaj z zamieszczonego układu okresowego pierwiastków chemicznych. (… /2p)Al2(SO3)3A. 342 u B. 75 u C. 75g D. 294 uC2H5COOHA. 59 u B. 74 u C. 60 u D. 74 g5. Zaznacz poprawne informacje na temat atomu potasu. (…/1p)Atom potasu K1939 składa się z:A. 19 protonów, 19 elektronów, 19 neutronów,B. 19 protonów, 39 elektronów, 19 neutronów,C. 19 protonów, 19 elektronów, 20 neutronów,D. 19 protonów, 19 elektronów, 39 neutronów
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