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Chemistry Quiz 1 (25 MCQs)

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1. How many branches of chemistry are there?
2. Classify the following as a physical change or a chemical change:burning a piece of wood
3. Which of the following represents an element?
4. Found in the nucleus of an atom. This particle has a positive charge.
5. Hydrogen is only the _____ most common element.
6. When a physical change in a sample occurs, which of the following does not change?
7. The primary purpose the body uses monosaccharides (sugars) for is?
8. Elements which do not react with other elements have their outermost shell.
9. Combustion reactions will always involve
10. The horizontal rows on the periodic table are known as
11. In which state of matter are the atoms tightly packed together?
12. The group B elements located in the middle of the periodic table. These elements are characterized by the presence of electrons in the d sublevel.
13. Is anything that occupied space, as mass and can be perceived by the senses.
14. In an aqueous solution of copper chloride, which substance is produced at the positive electrode
15. The atomic number tells you what? READ THE ANSWERS CAREFULLY
16. Polyethene is used to make _____
17. When heat is added/absorbed, the temperature of matter increases and the particles _____
18. In baking soda (NaHCO3) the three represents a _____
19. Which type of bond is formed by two nonmetals?
20. A chemical _____ is a pure substance made entirely of 1 type of atom.
21. Subatomic particles with no charge but was a mass equal to that of a proton.
22. Phase change from a solid to a liquid.
23. What is the atomic number of Carbon-13 (C)?
24. Choose the correct facts
25. Bad effect of food additives when take excessively is
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