Answer:

oxidant

Answer	Crossword Clue
OXIDANT	Rust cause
OXIDANT	Rusting agent
OXIDANT	Bleach, for example

OXIDANT	Rust producer
OXIDANT	Rust-causing agent
OXIDANT	It causes rust
OXIDANT	Combustion-aiding chemical

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.