This is gym work i need help on this question

What happens to atoms and chemical bonds during a reaction?

4. who was the first one to measure the speed of light and conclude that it is finite? 5. who was the first philosopher who thought the speed of light is finite? 13. what is the speed of light numerically? 14. give an example of something moving faster than light 15. give an example for some particles or waves that

In positive numbers less than 1, the zeros between the decimal point and a non-zero number are blank significant