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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 Bonds and Mixing
Which substance dissolves another?
  1. solute
  2. solvent
  3. mixture
  4. compound
Grade 8 Macromolecules
What type of organic substances are fats?
  1. nucleic acids
  2. carbon
  3. proteins
  4. lipids
Grade 8 Periodic Table and Elements
A substance that contains only one type of particle is called a                  .
  1. micro substance
  2. pure substance
  3. plain substance
  4. none of the above
Grade 8 Periodic Table and Elements
The number of protons in an atom is equal to the
  1. group number.
  2. period number.
  3. number of neutrons.
  4. atomic number.
Grade 8 Reactions
When oxygen in the air reacts with iron, iron oxide forms. Which of the following statements is correct?
  1. This is a physical change.
  2. This is a chemical change.
  3. Iron and iron oxide have the same properties.
  4. Oxygen and iron have similar properties.
Grade 8 Periodic Table and Elements
Grade 8 Bonds and Mixing
An ionic bond is the attraction between                        .
  1. similarly charged ions
  2. oppositely charged ions
  3. neutral ions
  4. neutral atoms
Grade 8 Bonds and Mixing
Grade 8 Solvents, Solutes, and Solubility
Grade 8 Properties of Matter
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
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