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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 Bonds and Mixing
Compare and contrast mixtures and compounds. Which statement is true about mixtures and compounds?
  1. Mixtures and compounds are the same throughout.
  2. Mixtures and compounds are made of two or more elements in a definite proportion.
  3. Mixtures must be separated by chemical methods and compounds by physical methods.
  4. Mixtures contain two or more elements physically combined and compounds contain two or more elements chemically combined.
Grade 8 Periodic Table and Elements
Grade 8 Bonds and Mixing
[math]MgF_2[/math] is an example of a(n)
  1. Ionic bond
  2. Metallic bond
  3. Covalent bond
  4. Noble bond
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
Grade 8 Properties of Matter
Ductility is the ability for a metal to be
  1. rolled into sheets
  2. pulled into wires
  3. pressed into angles
  4. melted into molds
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
Grade 8 Properties of Matter
Grade 8 Properties of Matter
Grade 8 Chemistry
Grade 8 Atomic Structure
An atom with more electrons than protons would be considered a(n)
  1. metal atom
  2. nonmetal atom
  3. ion
  4. atom of a metalloid
Grade 8 Chemistry
Which of the following is an indicator of a chemical change or reaction?
  1. a solid dissolves
  2. a new substance is formed
  3. water turns to steam
  4. a mixture is made
Grade 8 Properties of Matter
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