Chemistry Test Practice
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When electrons are added or taken away from an atom, they produce a charged particle known as...
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Ion
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Red Litmus paper turns ____ in a basic reaction
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Blue
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Of the many possible solutions, _____ can be dissolved to show whether a solution is a base.
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Acid
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A compound that produces an (OH⁻) ion in water is a ____
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Base
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The compound HCl is ______ because it produces positively charged hydrogen ions (H⁺) when dissolved in water.
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Phenolphthalein
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If you add more water to a sugar water solution, we will ______ the solution.
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Dilute
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A reaction between an acid and a base is known as a _________ because ions combine to form the neutral compound, water.
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Neutralization
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By adding more sugar to a solution of sugar water, we will increase the ________ of sugar in the water.
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Concentration
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Distilled water with sodium chloride (NaCl) dissolved in it would be a ______ _______ because it is neither an acid or a base.
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Nuetral Solution
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Blue litmus paper is an ______ because it changes color when exposed to an acid
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Indicator
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Barium Chloride, Pottasium Chloride, ionically bonded compounds made from a metal and a nonmetal are examples of ____
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Salts
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Acids taste: A. Salty B. Sour C. Bitter D. Sweet
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B. Sour
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In a neutralization reaction between sodium hydroxide (NaOH) and hydrochloric acid (HCl), the salt produced would be: A. Sodium Hydrochloride B.Sodium Chloride C. Sodium Acid D. Hydrochloric Hydroxide
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B. Sodium Chloride
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Bases cause phenolphthalein to turn: A. Orange B. Clear C. Green D. Pink
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D. Pink
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An acid is: A. a hydrogen ion [H⁺] acceptor B. a hydrogen ion [H⁺] C. a hydrogen ion [H⁺] destroyer D. a hydrogen ion [H⁺] donor
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D. a hydrogen ion [H⁺] donor
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A positive test for a base occurs when: A. red litmus turns blue B. blue litmus remains red C. blue litmus turns red D. red litmus remains red
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A. red litmus turns blue
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A base is: A. a hydrogen ion [H⁺] acceptor B. a hydrogen ion [H⁺] donor C. a hydrogen ion [H⁺] D. a hydrogen ion [H⁺] destroyer
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A. a hydrogen ion [H⁺] acceptor
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What two substances are always produced by a neutralization reaction? A. water and a salt B. an acid and a base C. water and a base D. water and an acid
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A. water and a salt
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When acids react with active metals, the gas produced is: A. water vapor B. carbon dioxide C. hydrogen D. oxygen
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C. hydrogen
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The characteristic ion of acids is: A. hydrogen ion [H⁺] B. carbonate ion [CO3²⁻] C. hydroxide ion [OH⁻] D. phosphate ion [PO4³⁻]
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A. hydrogen ion [H⁺]
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Acids have a pH that is: A. less than 7 B. greater than 7 C. equal to 7
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A. less than 7
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Bases have a pH that is: A. equal to 7 B. greater than 7 C. less than 7
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B. greater than 7
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Bases taste: A. sweet B. sour C. salty D. bitter
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D. bitter
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Which of the following is a property of acids: A. taste bitter B. feel slippery C. react with carbonates to form CO2 gas D. turns red litmus blue
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C. react with carbonates to form CO2 gas
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The characteristic ion of bases is: A. hydroxide ion [OH⁻] B. carbonate ion [CO3²⁻] C. sodium ion [Na⁺] D. hydrogen ion [H⁺]
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A. hydroxide ion [OH⁻]
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Which of the following is true? A. acids are nonelectrolytes and bases are electrolytes B. acids are electrolytes and bases are nonelectrolytes C. acids and bases are nonelectrolytes D. acids and bases are electrolytes
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D. acids and bases are electrolytes
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Strong acids: A. ionize completely and produce many hydroxide ions in solution B. ionize slightly and produce few hydrogen ions in solution C. ionize slightly and produce few hydroxide ions in solution D. ionize completely and produce many hydrogen ions in solution
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D. ionize completely and produce many hydrogen ions in solution
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A positive test for an acid occurs when: A. red litmus remains red B. red litmus turns blue C. blue litmus remains red D. blue litmus turns red
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D. blue litmus turns red
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Which of the following is NOT a formula for acid? A. HNO3 B. NaOH C. H2SO4 D. HCl
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B. NaOH
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The characteristic properties of an acid is due to the presence of _______ A. hydride ions B. hydroxyl ions C. hydronium ions D. oxide ions
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A. hydride ions
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A strong acid in solution is _______ A. mostly molecules B. mostly ions C. both molecules and ions D. mostly water
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B. mostly ions
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A weak acid in solution is________ A. mostly molecules B. mostly ions C. both molecules and ions D. less water
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A. mostly molecules
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The pH of a carbonated drink is______ A. less than 7 B. more than 7 C. equal to 7 D. approximately 7.8
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A. less than 7
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An acid is______ A. a proton donor B. a proton acceptor C. electron donor D. electron acceptor
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A. a proton donor
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A strong base and a weak acid will give you a ________ solution A. acidic B. basic C. neutral D. volatile
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B. basic
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Blue litmus paper turns a solution of borax (soap) __________ A. red B. pink C. remains colorless D. blue
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D. blue
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Which of the following is a weak base? A. NaOH B. KOH C.NH4OH D. Ca(OH)2
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D.Ca(OH)2
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Choose the acid from the following: A. NaNO3 B.Na2SO4 C. NaHSO4 D. Na2CO3
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C. NaHSO4
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Which of the following ionic species exist in a neutralization reaction? A. HCl⁻ B. H⁺ C. H20 D. H30⁺
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B. H⁺
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Acids become ________ bases
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conjugate
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Bases become _______ acids
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conjugate
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HBr? Acid or Base?
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acid
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Mg(OH)2? Acid or Base?
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base
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HCl? Acid or Base?
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acid
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KNO2? Acid or Base?
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salt
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HFO4? Acid or Base?
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acid
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Ba(OH)2? Acid or Base?
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base
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KCl? Acid or Base?
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salt
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H3PO4? Acid or Base?
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acid
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HClO? Acid or Base?
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acid
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Al(OH)3? Acid or Base?
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base
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KC2H3O2? Acid or Base?
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salt
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NaCl? Acid or Base?
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salt
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CsOH + H2CO3 →
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HOH + CS2CO
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HF + Mg(OH)2 →
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HOH + F2Mo
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HNO3 + Al(OH)3 →
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HOH + NO2Al
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HCl + KOH →
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HOH + KCl
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Mg + HC →
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H + MgC
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Zn + HCl →
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H + ZnCl
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Fe + H2SO4 →
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H + FeSO4
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Na + HCl →
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H + NaCl
