Lloyd’s lab partner is looking down into a test tube while he heats the contents by using a flame. which action should lloyd recommend to his partner if heating must continue?
wear safety goggles while looking into the opening of the test tube.
cover the opening of the test tube so that no materials can boil out of it.
move the test tube so that the opening is pointing away from all students.
put the test tube in a hot water bath so that no water can enter its opening.

allowed for the prediction of the properties of missing elements.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.