Chapter 3 Practice Test Practice Test Reactions and Equations.

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Presentation transcript:

Chapter 3 Practice Test Practice Test Reactions and Equations

 1. Balanced 1. A(n) ____ chemical equation has the same number of atoms of each element on each side of the equation.

 2. Reactant 2. Each substance on the left side of the arrow in a chemical equation is a ____.

 3. Single replacement What type of reaction is shown in the following chemical equation: Zn + 2HCl  ZnCl 2 + H 2 ? 3. What type of reaction is shown in the following chemical equation: Zn + 2HCl  ZnCl 2 + H 2 ?

 4. (aq) 4. In a chemical equation, the symbol that means dissolved in water is ____.

 5. Single Replacement 5. When one element replaces another element in a compound, the reaction is a ____ reaction.

 6. Catalyst A substance that speeds up a chemical reaction without being permanently changed itself is a(n) ____. 6. A substance that speeds up a chemical reaction without being permanently changed itself is a(n) ____.

 7. Decomposition 7. The breaking down of a substance into two or more simpler substances is ____.

 8. Product 8. Each substance to the right of the arrow in a chemical equation is a(n) ____.

 9. Exothermic 9. A chemical reaction in which heat energy is released is ____.

 10. Coefficient 10. Numbers that precede symbols and formulas in a chemical equation are ____

 11. Synthesis 11. A chemical reaction in which two or more substances combine to form another substance is called a ____.

 atoms 12. According to the law of conservation of mass, if two atoms of oxygen are used as a reactant, how many atoms of oxygen must be part of the product?

 13. Decompostion 13. What type of reaction is shown in the following chemical equation: 2MgO  2Mg + O 2 ?

 14. Energy 14. Anything that is not matter and can cause a change in matter is a definition of a ______

 15. NO 15. Will a reaction happen? Hg(l) + AlCl

 16. Yes.. AlCl 3 (aq) + H 2 (g) 16. Will a reaction happen? Al(s) +HCl (aq)

 17. Yes Cl is more active than Br 17. Will this reaction happen? 2NaBr + Cl 2  2NaCl +Br 2

 18. Synthesis 18. Figure “ A ” is an example of a ____ kind of reaction

 19. Single Replacement 19. Figure “ B ” is an example of a ____ kind of reaction

 20. Decomposition “ C ” 20. Figure “ C ” is an example of a ____ kind of reaction

 21. Double Replacement “ D ” 21. Figure “ D ” is an example of a ____ kind of reaction

 22. Francium Fr  Metals go from right to left and top to bottom 22. What is the most metallic element on the periodic table

 23. F Flourine  The strongest non metals are on the RIGHT and go from bottom to the top 23. What is the least metallic or most non metal element on the periodic table?

THAT ’ S ALL FOLKS!!!

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