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Chemistry Quiz 24 (25 MCQs)

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1. Cm3 of 0.3 mol dm-3 sodium hydroxide neutralises 15 cm3 of hydrochloric acid solution. Determine the concentration of the hydrochloric acid solution.
2. Which two particles would you find in the nucleus of an atom?
3. When heat is removed/released, the temperature of matter decreases and the particles _____
4. Studies chemicals, matter and its properties, and atoms in order to understand how elements join together to form different substances.
5. Formula mass of KBr
6. Wastes may be produced when:
7. What is velocity?
8. Which of the following elements is multivalent?
9. Almost every situation you can imagine involves a chemist, because _____
10. Nitrogen makes up about _____ percent of animals and vegetable proteins.
11. Balance this equation _____ Zn+ _____ HCl$\rightarrow$ _____ ZnCl2 + _____ H2
12. A substance formed by two or more different elements defines a/an
13. Balance this equation _____ HgO $\rightarrow$ 2Hg + O 2
14. Calculate the number of moles of Aluminum in a 2.04 mole sample of aluminum oxide, Al2O3.
15. The _____ in a formula tells the number of atoms of each element present.
16. It is the short form of abbreviated name-of the element?
17. A substance that is dissolved in a solution.
18. The Element 'X' health six electrons in its outer or valence shell, what is its valency?
19. Water changing states at 100 degrees Celsius is an example of
20. Which of the following is not a property of a material?
21. How many atoms are there TOTAL in:H2SO4
22. These kind of observations are made using instruments such as rulers, balances and thermometers.
23. Which type of bonding is present within organic molecules?
24. Process from solid to liquid.
25. Organic compound usually contains
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