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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 :: Properties of Matter by outom964
Grade 8 :: Acids and Bases by LBeth
Grade 8 :: Acids and Bases by LBeth
Which set of substances listed is correctly sequenced from most to least acidic?
  1. pH = 3, pH = 2, pH = 9
  2. pH = 7, pH = 8, pH = 9
  3. pH = 1, pH = 3, pH = 6
  4. pH = 8, pH = 10, pH = 14
Grade 8 :: Properties of Matter by NinaDashananJones
Angel's favorite bike begins to rust. The rust is an example of which of the following?
  1. Physical change
  2. Exothermic reaction
  3. Endothermic reaction
  4. Chemical change
Grade 8 :: Properties of Matter by NinaDashananJones
Jackie gets a hair cut. The haircut is a(n)
  1. chemical change
  2. endothermic reaction
  3. physical change
  4. exothermic reaction
Grade 8 :: Chemistry by ScienceMike
Which formula represents a strong acid?
  1. [math]H_2SO_4[/math]
  2. [math]H_2CO_3[/math]
  3. [math]CH_3COOH[/math]
  4. [math]CCl_3COOH[/math]
Grade 8 :: Chemistry by ScienceMike
Grade 8 :: Chemistry by ScienceMike
A reaction between an acid and a base is called               
  1. catalyzation
  2. nitrification
  3. neutralization
  4. polymerization
Grade 8 :: Properties of Matter by aliciaerickson
Grade 8 :: Acids and Bases by aem492
A solution at pH 11.5 is
  1. acidic
  2. basic
  3. neutral
  4. none of the above
Grade 8 :: Periodic Table and Elements by LBeth
Grade 8 :: Periodic Table and Elements by misschalas
The number of protons in the nucleus of an atom of that element is
  1. atomic number
  2. atomic weight
  3. mass number
  4. isotopes
Grade 8 :: Periodic Table and Elements by LBeth
Grade 8 :: Periodic Table and Elements by LBeth
Grade 8 :: Periodic Table and Elements by LBeth
Grade 8 :: Molecules and Compounds by LBeth
Which of the following best describes carbon monoxide?
  1. element
  2. compound
  3. homogeneous mixture
  4. heterogeneous mixture
Grade 8 :: Biochemistry by rebmidwife
The process where cells obtain energy from sugar molecules is called:
  1. biotic
  2. nitrogen cycle
  3. respiration
  4. food chains
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