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Chemistry Quiz 22 (25 MCQs)

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1. A substance has a melting point of 0 degrees Celsius and a boiling point of 100 degrees Celsius. The substance is most likely _____
2. Suppose that you experimentally determine the mass of nylon formed as a result of each of several similar chemical processes. What are the measurements of mass called?
3. Cm3 of 0.4 mol dm-3 sodium hydroxide solution, NaOH that is filled into a conical flask is titrated with 1.0 mol dm-3 of sulphuric acid, H2SO4. Determine the final volume of solution in the conical flask.
4. What are found in the space surrounding the nucleus of an atom?
5. Hydrogen + oxygen = hydrogen dioxideChoose the product(s)
6. Phase change from a gas to a liquid.
7. _____ fertilizers contain all the major ingredients required for the growth of plants.
8. Molar mass is in units of _____
9. _____ are found in the form of liquids or solids.
10. What is an example of a thermal decomposition reaction?
11. Which type of formulas represents the simplest ratio of the constituent atoms in a compound?
12. Branch of chemistry that is concerned with the study of structure, composition, and chemical reactions of substances in living systems.
13. Process from gas to solid.
14. The measurement that has only nonsignificant zeros is:
15. There are usually many of this type of variable in an experiment
16. When is it OK to eat or drink at the lab tables?
17. The _____ is the sum of the protons and the neutrons in an atom.
18. _____ is the branch of chemistry that would study and develop new materials to improve existing products or make new ones that in general do no contain carbon.
19. _____ is the branch of chemistry that would study and develop products that in general do no contain carbon.
20. What is the molar mass of AuCl3?
21. Identifies an unknown through by calculating its composition.
22. The chemical formula Br2 + Cl2 + 29.4 kJ $\rightarrow$ 2BrCl is a _____
23. We know that air is a mixture and not a compound because
24. When you have something that does not dissolve it is referred to as being
25. How many HCl molecules do you need to balance this equation? Mg + _____ HCl $\rightarrow$ MgCl2 + H2
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