Page 186 - الكيمياء كتاب الطالب للصف 11 الفصل 1

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Images in order of appearance:
MEHAU KULYK/SCIENCE PHOTO LIBRARY/Getty Images; Bettmann/

Getty Images; Nostagrams/Shutterstock; Print Collector/Getty Images; rktz/
Shuttestock; Ted Horowitz/GI; Rajesh. Rajan/Shutterstock; ANDREW LAMBERT
PHOTOGRAPHY/SCIENCE PHOTO LIBRARY; CUHRIG/Getty Images; Science
Photo Library/Getty Images; ANDRZEJ WOJCICKI/Getty Images; Gunter Marx/

Getty Images; Kevin Schafer/Getty Images; CHARLES WINTERS/SPL;
Cerae/ Getty Images; ROBERTO DE GUGLIEMO/ Getty Images; ANDREW
LAMBERT PHOTOGRAPHY/SPL; Teresa Short/Getty Images; Science Photo
Library/Getty Images; Zenobillis/ Getty Images; Katiekk/Shutterstock; CHARLES

D. WINTERS/SPL (x2); rezoff/Shutterstock; David Acaster; arabianEye FZ LLC/
Alamy Stock Photo; gstraub/Shutterstock; Eskaylim/Getty Images; Samohin/ Getty
Images; Rabbitmindphoto/Shutterstock; ANDREW LAMBERT PHOTOGRAPHY/
SPL; Mtreasure/Getty Images

WB: Rainer Lesniewski/Shutterstock
SPL = Science Photo Library