6 part question
1. describe the appearance of a Bunsen flame that is getting insufficient air?
2. describe the appearance of a Bunsen flame that is getting too much air.
3. When inserting glass tubing into a rubber stopper, how far from the stopper should you hold the tubing?
4. define the term filtrate.
5. define the term residue.
6. define the term precipitate.
Please explain what your problem is here. It seems to me that if you've seen a bunsen burner operate you should know the answer to 1 & 2. If you haven't seen one in operation you should.
For 3,5,5,6. Aren't these described in some detail in your lab manual or you can google for the definition.
1. To describe the appearance of a Bunsen flame that is getting insufficient air, observe a flame with a yellow or orange color. It will appear short, stubby, and quite smoky. This is because insufficient air supply leads to incomplete combustion of the gas, resulting in a fuel-rich flame.
2. To describe the appearance of a Bunsen flame that is getting too much air, look for a flame with a pale blue color. It will also exhibit a roaring or hissing sound. The flame will be tall, slender, and have a clear, well-defined shape. The excess air supply causes complete combustion of the gas, resulting in a fuel-lean flame.
3. When inserting glass tubing into a rubber stopper, you should hold the tubing approximately 1-2 centimeters (about half an inch to an inch) away from the stopper. This allows space for the tubing to be pushed into the stopper without breaking or applying excessive force that can damage the tubing or the stopper.
4. The term "filtrate" refers to the liquid or solution that passes through a filter during the process of filtration. Filtration separates solid particles or precipitates from a liquid by passing it through a filter medium, allowing only the liquid component to pass through. The resulting liquid that has passed through the filter is called the filtrate.
5. The term "residue" refers to the solid material or substance remaining after a process like filtration, evaporation, or precipitation has taken place. It is the solid residue left behind in the container or on the filter paper when the liquid or solution has been removed. Residue can consist of impurities, precipitates, or any material that does not dissolve or pass through the filter.
6. The term "precipitate" refers to the solid material that forms when two solutions are mixed chemically and a reaction occurs. This solid material is typically insoluble and may settle at the bottom of the container or appear as fine particles suspended in the liquid. Precipitates are formed when the reactants combine and form new compounds that are less soluble than the original components.