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Chemistry Quiz 44 (25 MCQs)

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1. A material with a constant composition.
2. Which substance is not produced during the combustion of alkanes?
3. The electrons in each element are characterized by _____ different quantum numbers.
4. A(n) _____ is the amount of electrons gained or lost to create a chemical bond.
5. A substance whose all the atoms have same atomic number is called _____
6. Atomic number is
7. A sample of steel has a volume of 5.00 cm3. What is the mass of this sample if steel has a density of 8.05 g/cm3?
8. Positively charged subatomic particles.
9. Filtration can be used to separate mixtures based on _____
10. What is the symbol of Potassium
11. The phenomenon of cooling and sudden expansion of gases is called.
12. Number of moles present in 22.0g of carbondioxide is
13. Name the group that has a single bond
14. What rule states that the ground level of an atom/ion, electrons fill atomic orbitals of the lowest energy before filling up to the higher energy.*Hint:In German, it means to build up.
15. Every pure chemical compound consists of two or more elements
16. The property that describes how something looks (e.g. size, mass, texture, shape) and how it behaves around other substances (e.g. soluble, magnetic)
17. Which of the following is a chemical property of a substance? The substance _____
18. How is a solid defined?
19. Elements are found in the _____ (living things).
20. Homogeneous mixture
21. What liquid detects the presence of an alkene?
22. Form of matter that has an indefinite shape, flows, and yet has a fixed volume.
23. What is the molar mass of sodium?
24. STP (standard temperature and pressure)
25. During an accident at a factory, some nitric acid is spilt. Which of the following when added in excess will neutralize the acid without leaving an alkaline solution?
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