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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 :: Properties of Matter by fecha
Grade 8 :: Properties of Matter by fecha
Grade 8 :: Periodic Table and Elements by frankthecoolguy
The numbers of protons in an atom is equal to the:
  1. Group number
  2. Period number
  3. Number of neutrons
  4. Atomic number
Grade 8 :: Properties of Matter by mrsquinones
Which is NOT a physical property?
  1. color
  2. density
  3. flammability
  4. taste
Grade 8 :: Reactions by fecha
In a synthesis reaction what occurs to the compound?
  1. Breakdown of an element into two new elements.
  2. A compound gets decomposed.
  3. A compound burns gas.
  4. A new more complex compound is formed.
Grade 8 :: Reactions by fecha
In an exothermic reaction, energy is transferred from
  1. the reactants to the surrondings
  2. surronding to the reactants
  3. one to another reactant
  4. the container it was in
Grade 8 :: Reactions by fecha
Grade 8 :: Reactions by fecha
Chemical reactions play a significant role in purifying silicon for use in
  1. microchips
  2. photosynthesis
  3. cellular respiration
  4. catalyst
Grade 8 :: Properties of Matter by fecha
Which is an example of a physical change?
  1. lighting a match
  2. breaking a board
  3. toasting bread
  4. baking a cake
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