1. ......... branch of chemistry deals with the study of energy and chemical reactions.
2. What is the mass number of an element with 7 protons and 7 neutrons.
3. The change of solid to gas is called
4. Scientifically acceptable general principle formulated to explain a phenomenon based on experimental evidence is called
5. The symbol of Aluminum is
7. The abbreviation used to represent compounds is known as
8. An atom that is negatively charged is called
9. What is the primary advantage of Renewable energy sources?
10. Which renewable energy source harnesses energy from the heat of the Earth?
11. The force of attraction between gas molecules is
12. What happens to the temperature of a substance during a phase transition in solids?
13. The point at which a substance changes from a liquid to a gas?
14. The process by which a gas changes to a liquid is?
15. What is the main assumption of the kinetic theory of matter?
16. What happens to kinetic energy of particles as temperature increases?
17. Which state of matter has particles with the highest kinetic energy?
18. According to kinetic theory, what is the nature of particles in a liquid?
19. Convert 13⁰C to Kelvin Scale.
20. A gas of volume 110cm³ at 550mmHg. Find the pressure when the volume was reduced to 55cm³, provided that the temperature remains constant.
