What is something a scientist could add to or subtract from an unknown substance that will always reveal information about the physical and/or chemical properties of the substance?

light
heat**
vinegar
iodine

is that right?🀠

ok hommies whats the rest

I agree

Heat

Yes, heat is an option that a scientist can use to reveal information about the physical and/or chemical properties of an unknown substance. By subjecting the substance to heat and observing its behavior, scientists can gather valuable information.

To further explain, scientists use heat as a common method in various experiments to test substances. When the substance is heated, it may go through phase changes such as melting, boiling, or sublimation, which can provide information about its physical properties like melting point and boiling point. Additionally, some substances react with heat, undergoing chemical changes such as combustion or decomposition, which can provide insights into their chemical properties and behavior.

However, it's important to note that while heat can be a useful tool for analysis, it may not always reveal all the necessary information about a substance's properties, and other techniques or tests may be required for a comprehensive analysis.