Science and Technology Quiz 1. In the Periodic Table of Elements, Ca is the symbol for what alkaline earth metal? - - - - Hint: think "milk." 2. What element in the Periodic Table, with the symbol Al, has the atomic number 13 and an atomic weight of 26.98? 3. A positively charged subatomic particle found in the nuclei of atoms is called a ______ . 4. What is the more common term for Dioxyribonucleic Acid, the chemical substance that carries genetic information? 5. In 1970 what company invented the "Floppy Disk"? 6. The Law of Gravitation was discovered by whom in 1687? 7. Who invented the first airplane with a motor, in 1903? 8. Who was the founder of psychoanalysis, around 1900?
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