Chemistry: hard and soft water

What does hard water contain?

What is the word equation for hard water?

What is the symbol equation for hard water?

What does soft water form?

What does hard water form and how?

What determines how hard or soft water will be?

The more magnesium and calcium the..... The less magnesium and. calcium the....

What are the benefits of hard water?

What are the drawbacks of hard water?

Can temporary hard water be softened and how?

Can permanent hard water be softened?

What does temporary hard water contain?

What happens to temporary hard water when heated?

What does permanent hard water contain?

What are the 2 methods to soften hard water?

What happens when sodium carbonate is added to hard water?

What is the word equation for adding sodium to hard water?

What is the symbol equation for adding sodium carbonate to water?

Why is hard water softened when sodium carbonate is added?

What does the calcium or magnesium carbonate form when adding sodium carbonate to water?

What is packed into an ion exchange cylinder?

What happens to the resin beads in the cylinder as the water is passed through?

What happens once the resin beads become saturated in dishwashers?

Why is it good to use an ion exchange column to soften hard water?