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82.1. Substances multiplicity.

Check the correct answer!

Which of these substances or mixtures are found in nature? (more than one answer is possible)
Grade:
8
Subject
Chemistry
Theme
What is learned in chemistry?
Subtheme
Substances multiplicity.

Solve tasks to find hidden Geo point coordinates

  1. Physics: Heat expanding.
  2. Physics: Researching basis in physics.
  3. Geometry: Polygon angle sum, convex or concaved quadrangle, polygon diagonale.
  4. Geometry: Polygon angle sum, convex or concaved quadrangle, polygon diagonale.
  5. Chemistry: Air composition and usage(reactions).
  6. Chemistry: Chemical element oxidation degree. Binary compound formula and name.
  7. Algebra: Proportions, percent
  8. Algebra: Transformation of algebraic expressions.
  9. Geometry: Rectangular, properties and signs.
  10. Chemistry: Substances multiplicity.