Chemistry Quiz 39 (25 MCQs)

Quiz Instructions:

Select an option to see the correct answer instantly.

1. Ethanol and water can be separated by fractional Distillation because they

2. Organic compouds are widely distributed in nature in various forms Name the most abundant organic compound in the world.

3. The subatomic particle that determines the identity of an element.

4. Which branch of chemistry that would include analyzing the how a medicine reacts in the body.

5. Form of matter that takes the shape of its container and can expand to fill any volume.

6. Property that carry out changes in the composition of a substance.

7. Which among the following is an element?

8. Which metal is used in making electrodes for dry batteries and crucibles for melting metals?

9. This law states that energy cannot be created or destroyed, but it can change form.

10. When two substances were combined together, heatwas given off and the color of the combined materials changed. What hashappened?

11. Oxidation reaction is that in which _____ is added to an element or compound.

12. In which of the following substances does sulphur exhibit its highest oxidation state?

13. In general, metals react by _____

14. Starting substance in a chemical reaction

15. If an element has more electrons than protons, it will have a _____ charge.

16. Determining the amount of mercury present in a soil sample

17. Activation energy is needed during what part of a chemical reaction?

18. Which metal is used in making paint pigments soaps, skin ointments, cosmetics and various plastics?

19. Molecules are separated by distances that are large compared with the size of the molecules.

20. Which order is correct when the following substances are arranged in order of increasing boiling point?

21. Diamond is an example of a

22. The smallest particle of any particular type of matter is known by which of the following terms?

23. How many Aluminum are in Al2O3?

24. Which of the following branches of chemistry involves the study of effects of harmful gases on the atmosphere?

25. Propene is converted to propanone in a two stage process.Propene $\rightarrow$ X $\rightarrow$ PropanoneWhat is the formula of compound X?