help guys pls is urgent!
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1. What is the first element on the periodic table? |
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2. What is the centre of an atom called? |
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3. True or false? Acids have a pH level below 7. |
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4. What is the main gas found in the air we breathe? |
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5. True or false? An electron carries a positive charge. |
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6. Famous New Zealand scientist Ernest Rutherford was awarded a Nobel Prize in which field? |
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