Physical properties are : a. those properties which can be observed without changing the identity of the substance. b. those properties which include combustibilty, flammability, and reactivity. c. those properties which require a chemical reaction to be observed. d. all of these

Which element forms an ionic bond with flourine? 1) fluorine 2) carbon 3) potassium 4) oxygen

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.

Find the number of moles of argon in 364g of argon.