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Hydrogen
Carbon Dioxide
evaporation
Oxygen is given off as a by-product os photosynthesis
respiromterrespirometer
Hydrogen
Effervescent, I believe.
None, no gas is given off.
Cyanoacrylate gas is given off.
Carbon dioxide is the gas given off. Oil also gives off the same gas when burned.
hydrogen
hydrogen eg:Na+HCl------>NaCl+H2
Carbon Dioxide is given off. (CO2)
Hydrogen gas.
Oxygen gas
When you place a lighted splint into, say, a test tube, where you suspect hydrogen gas is being given off, a 'pop' sound indicates the presence of the gas.
Oxygen is given of