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Q: Omar wants to find a simple test that he can use to identify certain gases. Omar wants to be able to identify oxygen hydrogen and carbon dioxide. He decides to use a splint of flaming wood to perform?
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Hydrogen and carbon dioxide cannot be seen how could you use a wooden splint and a flame to identify each of these gases?

You can identify hydrogen and carbon dioxide by lighting a wooden splint and putting it near the gasses. Since hydrogen is flammable, the flame will get bigger. Since carbon dioxide does not burn, it may get smaller or go out.


Can you identify carbon dioxide or hydogen gases in a chemical reaction by their color or odor if not what else can we do?

carbon dioxide will extinguish a flaming splint, hydrogen will burn rapidly


What gas is evolved when acids act on certain metals?

Hydrogen gas is evolved when acids act on certain metals. For example, when hydrochloric acid acts on sodium, sodium chloride is formed as hydrogen gas escapes.


How can you identify sulphur dioxide gas?

Hydrogen sulphide has the unpleasant smell of rotten eggs.


What is the common name of hydrogen dioxide?

H2O2 is a common name for hydrogen dioxide


Are there hydrogen molecules in dioxide?

dioxide is di(two)oxide(oxygen). no hydrogen.


Is hydrogen dioxide a gas?

Is this HO2 for hydrogen dioxide, never heard of it in 'normal' life


What is the oxidation number of hydrogen dioxide?

Hydrogen dioxide is water and the oxidation numbers are +1 for each hydrogen and -2 for oxygen


Which particles are smaller - hydrogen or carbon dioxide?

hydrogen


Do oxygen and hydrogen and carbon dioxide weigh the same?

No, hydrogen, oxygen and carbon dioxide have very different weights.


Why a pinch of manganese dioxide causes hydrogen peroxide to explode?

Manganese dioxide is a catalyst for the decomposition of hydrogen peroxide.


Does manganese dioxide catalyze the breakdown of hydrogen peroxide?

Yes manganese dioxide catalyzes the break down of hydrogen peroxide.