Preserving Metals Crossword Puzzle

QUESTIONS LIST:

• rust: corrosion process that takes place when metal combines with oxygen and water.
• iron oxide: other name for rust
• paint: process used to protect metal objects.
• galvanising: metal object is covered with zinc
• pickling: step in galvanizing where metal is washed in acid.
• zinc ammonium chloride : chemical used during fluxing
• molten: object is dipped into .... zinc.
• finishing: excess zinc is removed.
• electroplating: way to add a metal layer to an object.
• ion: charged particle
• electrolyte: solution that can conduct electrical current
• positive: plating material is connected to the ... terminal.
• negative: object is connected to the ... terminal.
• epsom salts: sugar, vinegar and ... is added to form the electrolyte.