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Chemistry Quiz 2 (25 MCQs)

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1. Which of the following are the sub-atomic particles of an atom?
2. How would you neutralize a weak base?
3. The temperature at which a substance changes from solid to liquid.
4. The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
5. Which of the following is NOT a state of matter?
6. Which activity below does not represent a chemical change?
7. An element with one electron in its outermost shell will generally form _____ bond.
8. What is a particle?
9. It is defined as how much substance dissolves in a given volume of liquid.
10. =The main active constituent of tea and coffee is
11. Balance the following: _____ Al + _____ O2 $\rightarrow$ _____ Al2O3
12. The amount of matter in an object is its
13. What do you call two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons?
14. How many electrons are found in the 2nd energy level?
15. Which macromolecule stores energy and makes up the cell membrane?
16. What do you call this attractive force holding particles together in the condensed phases of matter?
17. It includes flammability, toxicity, reactivity to water and oxygen like rusting, heat combustion etc.
18. The positively charged subatomic particle contained in the nucleus of an atom
19. What type of charge does a neutron have?
20. When water is heated, the amount of solid that can be dissolved in it
21. How many protons are in the nucleus of an atom with an atomic number of 15?
22. What trend does atomic radius follow as you move down the families on the Periodic Tables
23. A 10.0 gram of water sample decomposes into 1.11 grams of H2 and 8.89 grams of O2. Which law supports this?
24. The charge on an electron is
25. The dissolved materials in a solution
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