Reactant — Science definition
Defined in 2 courses:
- A substance consumed by a reaction. Light is not one, because it supplies energy rather than matter. (Life Science & Scientific Inquiry)
- A starting substance that goes into a chemical reaction. (Life Science: Biology)
Where it is taught
- Photosynthesis & Cellular Respiration — Cells, Transport & Cellular Energy, Life Science & Scientific Inquiry, Grade 7
- Signs of a Chemical Reaction — Chemistry, Physical Science: Matter, Forces & Energy, Grade 8
- Biochemical Reactions & Energy — Investigating the Chemistry of Life, Life Science: Biology, Grade 10
In use
The one thing that truly confirms a chemical reaction is the presence of a genuinely new substance — one with properties different from every reactant you began with.
Signs of a Chemical Reaction
Taught alongside
- photosynthesis
- cellular respiration
- product
- net change
- chemical reaction
- precipitate
- model
- evidence
- system boundary
- assumption
- synthesis reaction
- decomposition reaction
- ATP
- metabolism