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WebWhen you have completed the free practice test, click 'View Results' to see your results. Good luck! Science Courses / Chemistry 101: General Chemistry Course Web1. What's the lightest element in the periodic table? a) Helium b) Hydrogen c) Air d) Neutrons Question 2 2. What is the atomic number of carbon? a) 2 b) 6 c) 12 d) 14 Question 3 3. Which element in the periodic table was named in honour of physicist Albert Einstein? a) Albertium b) Relativium c) Physicsium d) Einsteinium Question 4 4. Webb) Carbon and silicon. c) Oxygen and nitrogen. d) Hydrogen and helium. Question 10. 10. What are the most common elements in the human body? a) Phosphorus, nitrogen, … java card matching game