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Chemical Reactionsx
chemistry topic1
Question | Answer |
---|---|
the dissolving substance is called...? | the solute. |
the liquid used to dissolve the substance is called...? | the solvent. |
chemical reactions usually involve some or all of what three changes? | - formation of a new substance - change in appearance - detectable energy change. |
what kind of reaction is "rusting"? | oxidation |
what is the colour change of iodine solution in the presence of starch? | orange/brown -> blue/black. |
how are compounds formed? | when elements react together. |
what is a reactant? | a strting material in a chemical reaction. |
what is a solution? | the mixture formed when a solute dissolves in a solvent. |
what is a saturated solution? | when there is so much solute it can no longer be dissolved in the solvent. |