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chemical reactions

alumno.silvia.carrac

Created on May 11, 2021

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Transcript

Chemical Reactions

What changes do chemical reactions produce?

COLOUR CHANGE:

ENERGY CHANGE:

When the product has a different colour than the original reactans

Some chemical reactions produce or absorb energy (thermal/light energy)

  • exothermic reactions produce energy
  • endothermic reactions absorb energy

gas formation:

precipitate formation:

Some chemical reactions produce gas. You can feel it through bubbles, smoke, an odour

It's a solid that can be formed when we combine liquids.