https://phet.colorado.edu/sims/html/molecule-shapes/latest/molecule-shapes_en.html
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PAST YEAR QUESTION CHAPTER 4 (2017/2018) 👇Happy watching... Tq... 😊🌹
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Why do onions make us cry? The mere thought of chopping onions can literally make you cry. But the moment your knife touches the onion, yo...
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