1) It is a process which substance or a combination of substances undergo a change in appearance or properties. a) Chemical reaction b) Chemical equation c) Toxic reaction d) Synthesis reaction 2) Capable of replacing one of a given compound. a) Synthesis/Combination reaction b) Decomposition reaction c) Double-replacement reaction d) Single-replacement reaction 3) A special kind of double displacement reaction that takes place when an acid a base react. a) Combustion reaction b) Acid-base reaction c) Double-replacement reaction d) Decomposition reaction 4) Which considered as This symbol also indicates the direction of the reaction. a) > b) < c) = d) + 5) It represents the whole process of a chemical reaction. a) Chemical reaction b) Chemical equation c) Chemical balancing d) Chain reaction 6) Symbols that signifies gases a) O b) g c) He d) N 7) A symbol that refers to a substance in water solution or dissolved in water a) ag b) au c) aq d) l 8) It symbolize heat a) b) c) d)

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