Chemistry Quiz 26 (25 MCQs)

Quiz Instructions:

Select an option to see the correct answer instantly.

1. The quantity of 10.2020 has how many significant figures?

2. Copper, silver and gold are called _____ metals.

3. The name of this compaund C4H10

4. Why is sodium stored under oil?

5. All elements in the same vertical column are referred to as:

6. What state of matter has the lowest amount of energy, and stays in one place?

7. A measure of the amount of matter that an object contains

8. This rule says that the amount of atoms in the reactants is equal to the amount of atoms in the products _____

9. He was the Greek philosopher who added the fifth fundamental element-ether / aether.

10. Molecular formula for the oxide of calcium is

11. The atomic number of an elements is the total number of which particles in the nucleus?

12. Which area of chemistry deals with muscles and digestion?

13. The electrons in the outermost energy level are called

14. What is the symbol of Lithium

15. Who developed the periodic table without knowing about the parts of the atoms?

16. If a material is tested and every sample has exactly the same properties and the same composition, it is

17. An intensive property that refers to the measure of the resistance of a mineral to scratching.

18. Measure of the amount of matter

19. Process from gas to liquid.

20. The branch of chemistry that would study enzymes used in the digestion of food is _____

21. Matter with a definite shape and volume

22. Empirical formula of C6H12O6 is

23. Dead plant material, animal dung, manure rock phosphate and chile saltpeter are.

24. One way to tell how many elements a compound has is to..

25. These methods are based on interaction of electromagnetic radiation with analyte atoms & molecules.