More cards in this set

Card 6

Front

Water treatment- Fluoride

Back

Preview of the front of card 6

Card 7

Front

Rust is?

Back

Preview of the front of card 7

Card 8

Front

Cause of rust

Back

Preview of the front of card 8

Card 9

Front

Preventing rust:

Back

Preview of the front of card 9

Card 10

Front

Hard water caused by

Back

Preview of the front of card 10

Card 11

Front

Hard water causes

Back

Preview of the front of card 11