Test for carbon dioxide by burning a splint, using litmus or indicator papers or running the gas through lime water. Additionally, according to the National Institutes of Health, a blood test can be performed to determine the amount of carbon dioxide in a person's blood.Continue Reading
A chemistry lab offers several different ways in which a person can test a gas to determine if it is carbon dioxide, or CO2:
Light a splint
Collect carbon dioxide gas in a tube by downward delivery or using a gas syringe. Light a splint, which is a long, thin strip of wood. Insert the lit splint into the tube with the gas. If carbon dioxide is in the tube, the flame will go out.
Place a piece of moist litmus paper into the tube with the carbon dioxide gas. If the gas is present, the litmus paper will turn from blue to red.
Place a piece of moist universal indicator paper into the gas tube. If carbon dioxide gas is present, the universal indicator paper will turn yellow.
When carbon dioxide is run through lime water, the water turns cloudy. This is because the water is a solution of calcium hydroxide, and when it reacts with carbon dioxide, a solid precipitate of calcium carbonate forms.
The reaction between chalk and vinegar is a neutralization reaction between calcium carbonate and acetic acid to produce water, carbon dioxide and calcium acetate. Carbon dioxide is a gas that causes the reaction to bubble.Full Answer >
Gasoline burning is an example of a chemical change, because this process produces water vapor and carbon dioxide. For something to be categorized as a chemical change, it must form new chemical substances. It also entails making and breaking molecular bonds. Another example is iron rusting, which forms iron oxide.Full Answer >
Compounds of silicon and hydrogen, known as silanes, react explosively with oxygen and react with water, forming silicon dioxide and water and silicon dioxide and hydrogen gas respectively. Silicon accounts for 28 percent of the earth's crust but it does not appear naturally in its elemental form.Full Answer >
Tablets that fizz in and add color to water typically contain baking soda and other antacids that react to form carbon dioxide gas bubbles, explains Scientific American. Fizzing color tablets used in school classrooms, for example, contain baking soda and can demonstrate how temperatures affect chemical reactions, according to Educational Innovations.Full Answer >