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259.1. Air composition and usage(reactions).

Type in the missing word!

8A or 18. group elements which are included in the composition of the air are called .
Grade:
8
Subject
Chemistry
Theme
Air and its quality.
Subtheme
Air composition and usage(reactions).

Solve tasks to find hidden Geo point coordinates

  1. Algebra: Square root properties
  2. Chemistry: Chemical element oxidation degree. Binary compound formula and name.
  3. Physics: Spread of Heat.
  4. Chemistry: Substances structure.
  5. Algebra: Absolute and relative mistake of approximation.
  6. Algebra: Incomplete quadratic equations
  7. Algebra: Fraction amplification and abbreviation.
  8. Algebra: Different size units.
  9. Chemistry: Atoms un ķīmiskie elementi.
  10. Geometry: Rectangular, properties and signs.