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Chemistry Questions - All Grades

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Grade 8 Properties of Matter
Grade 8 Reactions
What law says that nothing can be created or destroyed in a reaction?
  1. The Law of Physics
  2. The Law of Conservation and Mass
  3. The Law of Chemistry
  4. The Law of Conserving Chemical Reactions
Grade 9 Atomic Structure
Why does an atom have no net electric charge?
  1. Its subatomic particles carry no electrical charge.
  2. The positively charged protons cancel out the negatively charged neutrons.
  3. The positively charged neutrons cancel out the negatively charged electrons.
  4. The positively charged protons cancel out the negatively charged electrons.
Grade 10 Macromolecules
Grade 5 Matter
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 Periodic Table and Elements
Grade 9 Atomic Structure
What are the three particles that make up an atom?
  1. protons, neutrons, and isotopes
  2. neutrons, isotopes, and electrons
  3. positives, negatives, and electrons
  4. protons, neutrons, and electrons
Grade 8 Periodic Table and Elements
Grade 9 Bonds and Mixing
Grade 8 Periodic Table and Elements
Grade 8 Periodic Table and Elements
Grade 10 Macromolecules
Carbohydrates are made up of the three elements of
  1. nitrogen, oxygen, and hydrogen.
  2. carbon, hydrogen, and oxygen.
  3. sulfur, hydrogen, and oxygen.
  4. nitrogen, phosphorus, and oxygen.
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