In this lesson we will learn about the chemical reactivity of metals and some of the different reactions involving metals.
By the end of this lesson you will be able to:
- Describe how metals form ions when reacting.
- Write the products of:
- Metal-oxygen reactions.
- Metal-water reactions.
- Metal-acid reactions.
- Metal displacement reactions.
- Metal-halogen reactions.
- Use the reactivity series to predict whether a particular chemical reaction involving a metal will take place.
(Image: Tim, Adobe Stock)
- Metals react by losing electrons to form positive ions as part of ionic compounds.
- The reactivity series of metals lists metals from most reactive to least reactive.
- This can be used to predict whether a chemical reaction will take place or not.
- Almost all metals react with oxygen to produce metal oxides.
- metal + oxygen → metal oxide
- Most metals react with dilute acids to produce a salt and hydrogen.
- metal + acid → salt + hydrogen
- Some metals react with water to produce metal hydroxides and hydrogen.
- metal + water → metal hydroxide + hydrogen
- Metals can react with ionic salts if the metal is more reactive than the metal in solution.
- metal-1 + metal-2 salt → metal-2 + metal-1 salt
- These are known as metal displacement reactions.
- All metals react with halogens to produce metal halides.
- metal + halogen → metal halide
- All metal reactions are redox reactions, as they involve the transfer of electrons.
(Image: Capaccio, Wikimedia Commons)
(Header image: 3dman_eu, Pixabay)