Question

If no carbon dioxide is present in your test tube it will be a ____________ color. If a medium amount of CO2 is present, your test tube will be a _______________ color. If a large amount of CO2 is present, your test tube will be __________________.

Answer 1

if there is no carbon dioxide your test tube will be blue

if there is a medium amount of carbon dioxide your test tube is green

if there are high amounts of CO2 it will be

yellow