Chemistry Quiz 44 (20 MCQs)

Quiz Instructions

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1. Combination of two or more substances that are not chemically combined.
2. It is one of the frontiers that the chemists are currently exploring in relation to the upgrade and advancement of different items that profoundly improved the quality of our lives.
3. How many meters are in 680 nm
4. What's an atom with an electric charge?
5. Group of elements whose ending e-configuration is p2. 4 electrons in outer shell. Made up of a nonmetal, metalloids and metals.
6. Carbon containing compounds such as $ CO_2^{ }$ & $ bicarbonates$ are studied in .....
7. Which property of water is important to the survival of aquatic organisms during the winter months?
8. Most of the mass of an atom is contained here.
9. The symbol and valency of ammonium is
10. The life cycle of a product refers to .....
11. No sides are equal and all have equal angles (90$^ \circ$)
12. What do we call the rows of the Periodic Table
13. Studies chemicals, matter and its properties, and atoms in order to understand how elements join together to form different substances.
14. Those are an example of synthetic rubber, except
15. Branch of chemistry that is concerned with the art and science of determining what matter is and how much of it exists.
16. Form of matter that has an indefinite shape, flows, and yet has a fixed volume.
17. Substance that consists of one type of atom. It is a pure substance. Found on the Periodic Table.
18. How is a solid defined?
19. All of the following are characteristics of all living things EXCEPT
20. In baking soda (NaHCO3) the three represents a .....