101 Exam Questions With Correct Answers

Covalent bonds {Ans: N and F Br and Br O and C}Ultraviolet light {Ans: Most energetic electromagnetic radiation}Molar mass of caffeine? C8H10N4O2 {Ans: 194 g/mol}Atom {Ans: The smallest unit of matter which cannot be broken down except in nuclear reactions}Atomic number {Ans: This number represents how many protons the element contains}A car has travelled 120,000,000,000,000,000 picometers has travelled how many kilometers? {Ans: 1.20 *10^17 pm 10^-12m. Km --------- X ----------- 1 pm. 1000m =120 km}