Graduation of elements properties in the modern periodic table

The video tutorial demonstrates an experiment where coal is burned in a jar filled with oxygen, producing carbon dioxide. This gas is then dissolved in water, forming carbonic acid, which turns violet litmus solution red. The experiment illustrates how non-metals react with oxygen to form non-metal oxides, using carbon as an example.

What is the first step in setting up the experiment with oxygen?

• Burn the coal piece

• Place the oxygen jar on the table

• Light the burner

• Add water to the jar

What happens when the coal is burned in the presence of oxygen?

• Water vapor is formed

• Carbon dioxide gas is produced

• Oxygen gas is released

• The coal turns into ash

What is added to the carbon dioxide gas in the jar?

• Violet litmus solution

• More oxygen

• Water

• Coal

What is the result of dissolving carbon dioxide in water?

• Formation of carbonic acid

• Release of oxygen

• Creation of a basic solution

• No reaction occurs

What color change occurs in the litmus solution when carbonic acid is formed?

• Blue to green

• Red to blue

• Violet to red

• Yellow to orange