If the patient’s chest is not inflating doing the breathing test you should check the patient?

What occurs during a combustion reaction

Glass has a hardness that is in the middle of the hardness scale. what is the hardness of glass?

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.