Chemical Processes and Reactions Quiz - 10th Grade Science

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Questions and Answers

What is the chemical name for rust?

  • Iron oxide (correct)
  • Sodium chloride
  • Calcium carbonate
  • Aluminum hydroxide

Which gas is produced during the process of photosynthesis?

  • Carbon dioxide
  • Nitrogen
  • Hydrogen
  • Oxygen (correct)

What is the chemical formula for water?

  • H2O (correct)
  • CO2
  • CH4
  • NaCl

What is the process of reproduction in living organisms called?

<p>Fertilization (C)</p> Signup and view all the answers

Which part of a plant is responsible for the process of photosynthesis?

<p>Chlorophyll (D)</p> Signup and view all the answers

What is the primary function of the respiratory system in living organisms?

<p>Exchange of gases (A)</p> Signup and view all the answers

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Study Notes

Chemical Reactions and Processes

  • Rust is chemically known as iron(III) oxide, represented as Fe₂O₃.
  • The process of photosynthesis produces oxygen gas (O₂) as a byproduct, occurring in plants, algae, and some bacteria.

Fundamental Compounds

  • Water is comprised of two hydrogen atoms and one oxygen atom, with the chemical formula H₂O.

Biological Functions

  • Reproduction in living organisms is termed reproduction and encompasses both asexual and sexual methods to produce offspring.
  • Photosynthesis occurs mainly in the chloroplasts of plant cells, with chlorophyll being the pigment that captures light energy.
  • The respiratory system's primary function is the exchange of gases, facilitating the intake of oxygen (O₂) and the removal of carbon dioxide (CO₂) from the body.

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