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Introduction to Chemistry

SheelonChemistryScienceEnglishGrades 8-10Published Feb 10, 2026

Elements, compounds, reactions, and the periodic table.

12

questions

~6 min

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3

question types

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Questions in this quiz

Play the first 3 free. The rest stay locked until you sign up.

  1. What is the chemical formula for water?

    Type Answer · 20s

    Type your answer...
  2. Question 1 of 1

    How many elements are in the periodic table (approximately)?Tap an answer

    Multiple Choice · 20s

  3. What is the atomic number of carbon?

    Type Answer · 30s

    Type your answer...
  1. An atom with more electrons than protons has what charge?Multiple Choice · 20s
  2. Table salt is composed of sodium and what other element?Type Answer · 30s
  3. The pH of pure water is 7True / False · 15s
  4. What is the chemical symbol for gold?Type Answer · 20s
  5. Which subatomic particle has no charge?Multiple Choice · 20s
  6. Acids have a pH value less than 7True / False · 15s
  7. What type of bond involves the sharing of electrons?Multiple Choice · 20s
  8. What is the most abundant gas in Earth's atmosphere?Multiple Choice · 20s
  9. The chemical formula NaCl represents what compound?Type Answer · 30s

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