Compounds are different than elements because compounds are - Combinations of two or more elements
Not able to be broken down into parts
Made from the same type of atoms
A pure substance; elements are not

Dr. arenas is a scientist who has been trying to determine if increasing pressure will increase the sound that occurs when two chemicals explode. it measures the volume of the sound that occurs at the minimum pressure at which the explosion will occur. it then increases the pressure and measures the volume of the explosions that occur. what kind of investigation is the scientist conducting?