Mass Changes During Chemical Reactions

Added by Dr. Andrew Pulham on Dec 15, 2008

This activity investigates the mass changes that take place when a selection of chemical reactions take place. Experiments are constructed to show mass changes when elements combine with oxygen, during metal-metal salt reactions and when metal carbonates decompose. Conservation of mass during chemical reactions is also reinforced.

This item teaches:

  • about examples that demonstrate the conservation of mass in chemical reactions
  • abuot the formation of oxides from substances burning in air
  • about the conservation of total mass in chemical reactions

Contents

Objectives

  • To investigate the mass changes when elements combine with oxygen
  • To investigate the mass changes during metal-metal salt reactions
  • To investigate the mass changes when metal carbonates decompose
  • To reinforce the fact that mass is conserved during chemical reactions

Models

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