Inhaling and exhaling
We blew into this tube
We sucked through this tube
Milky white = lots of carbon dioxide
SomeSome carbon carbon dioxidedioxide
Dry cobalt chloride paper (blue)
Wet cobalt chloride paper (pink)
Condensation from breath
The condensation turns the paper pink (we breathed out water)
We breathed out heat energy
These experiments show us that respiration produces 3 things
• What are these 3 things?
3 things made in respiration
• Carbon dioxide
• Water
• energy