chemistry final

1. What is the atomic number of carbon?

2. Which of the following is a chemical change?

3. What type of bond is formed when electrons are shared between atoms?

4. What is the pH of a neutral solution?

5. Which of the following elements is a noble gas?

6. What is the molecular formula for water?

7. Which of the following is a characteristic of metals?

8. Which of the following reactions is an example of synthesis?

9. What is the primary gas produced during photosynthesis?

10. What is the process of a solid turning directly into a gas called?

11. Which of the following compounds is an alkane?

12. Which part of the atom contains protons and neutrons?

13. What is the main purpose of a catalyst in a chemical reaction?

14. Which of the following is a diatomic molecule?

15. What is the law that states mass cannot be created or destroyed in a chemical reaction?

16. Which element is essential for the formation of proteins?

17. What is the main component of natural gas?

18. What is the process of breaking down a compound into simpler substances called?

19. Which of the following is a property of acids?

20. Which of the following is a property of bases?

21. Which type of reaction occurs when an acid reacts with a base?

22. What is the primary source of energy for the Earth?

23. What is the term for the amount of energy required to raise the temperature of 1 gram of water by 1 degree Celsius?

24. What is the main component of air?

25. What is an example of a renewable resource?