Metal + acid = salt + hydrogen
When metals react with acids, they produce a salt as well as hydrogen gas.
Think of MASH (Metal + Acid = Salt + Hydrogen).

Think of a seed in a metal band who, to unwind after gigs, loves to mash potato.
(Metal + Acid = Salt + Hydrogen)
Examples
| Zinc | + | sulphuric acid | → | Zinc sulphate | + | hydrogen |
| Metal | + | acid | → | salt | + | hydrogen |
| Magnesium + hydrochloric acid | → | Magnesium chloride | + | hydrogen | ||
| Metal + acid | → | salt | + | hydrogen |