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Chemistry Quiz 38 (25 MCQs)

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1. Write the chemical name for the following compound Fe3+ and O2-
2. Which statement is correct about the cleansing action of soap?
3. A form of matter that has a definite composition and distinct properties.
4. Which correctly lists elements?
5. Symbol of Permanganate
6. Biochemistry deals with
7. Ceramics is a _____ word which means potter, s clay.
8. How many protons, neutrons and electrons are there in a 27Al13 atom
9. In a reaction, the amount of product was calculated to be 10.0 g. In the lab, the amount of product obtained was 8.2 g. Find the percent yield.
10. If an element is dull, brittle, and a good insulator, you would be looking for a _____
11. What are the types of changes?
12. _____ is the process of experimentally determining the value of kA by measuring the signal for one or more standard samples, each containing a known concentration of analyte.
13. An unknown liquid is provided in a science class. After observing the liquid for a while, a student notices that particles in the liquid separate out over time. What type of matter best classifies this liquid?
14. The mass of ethanedioic acid, H2C2O4 in 250 cm3 of0.25 mol dm-3 solution is
15. What properties that do not depend on the amount of the matter present
16. Pure oxygen (O) is an example of _____
17. A branch of chemistry that is concerned with how and why chemicals interact is _____
18. Identifies an unknown through by determining its composition.
19. The formula of methane is CH4. Which of these is true?
20. Mixtures are separated through _____ changes.
21. Which of the following lab apparatus measures temperature?
22. _____ properties can only be observed when the substance in a sample of matter are changing into different substances
23. According to the octet rule most elements need _____ valence electrons.
24. Name the quantity being measured below:133 s
25. Chemistry is (technically) the study of _____
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