The Limewater Carbon Dioxide Test | Science project ...
The Limewater Carbon Dioxide Test. Science project. ... The CO 2 then bubbles up through the straw and into the limewater. Limewater is created with calcium hydroxide, or Ca(OH) 2. Named for the mineral, not the fruit, lime reacts with CO 2 in water to form calcium carbonate, which is white and does not dissolve in water, causing the water to ...