Investigation to determine whether expired air contains carbon dioxide
Formulate a hypothesis for this investigation.
Expired air contain carbon dioxide.
1.Clear lime water turned milky after it was exposed to exhaled air
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Hypothesis: Expired air contains carbon dioxide.
To formulate a hypothesis for this investigation, we need to make an educated guess or prediction about what the investigation is expected to find. In this case, we are investigating whether expired air, which includes the air we exhale from our lungs, contains carbon dioxide. Based on existing knowledge of human respiration, it is known that the air we inhale contains oxygen and the air we exhale contains a mixture of gases, including carbon dioxide. Therefore, it is reasonable to hypothesize that expired air does contain carbon dioxide.
The hypothesis for this investigation can be stated as: "Expired air contains carbon dioxide."