Chemistry Quiz 17 (25 MCQs)

Quiz Instructions:

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1. Which statement about stereoisomers is correct?

2. What will be the compound name of the following chemical formula? NaCl

3. In which step of the scientific method is information obtained through the senses?

4. Which of the following is an example of the law of conservation of matter?

5. Atomic number = _____

6. What method can be used to separate parts of a liquid mixture when the entire mixture can pass through a filter?

7. The total number of protons and neutrons in the nucleus of an atom?

8. Chemical reactions start with _____ and end with _____

9. A change in the size, shape, form, or state of matter that does not change the matter's identity

10. What are the two main categories of elements onthe periodic table?

11. Moles of Al2O3 in 40g

12. The state of matter in which a material has a definite volume but no definite shape is called

13. When biomolecular subunits are joined together, what is produced or is a byproduct?

14. Al razi was a great physcian, scientist and chemist. He discovered many things. One of them was

15. Reduction is _____

16. A local water quality standard for a particular metal is 100 ppm. Which of the following describes what 100 ppm means?

17. CaCO3 $\rightarrow$ CaO + CO2

18. If a mixture has components you can see it is a _____

19. Saponification is used to make what?

20. Chlorine is a poisonous greenish yellow gas with a pungent odour but it has lot of uses, Where it is not used?

21. Which scientist is credited with discovering the negatively charge subatomic particles in the atom?

22. Aluminum foil is rolled into sheets for easy handling. Which physical property of aluminum makes this possible?

23. What is the bond that involves sharing valence electrons of a metallic element?

24. Groups on the periodic table are arranged _____

25. Which variable is changed by the scientist during an experiment?