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