When scientists say that a theory can never be proven, what are they actually saying? there is no way to test the accuracy of a theory. theories should not be used to make predictions. theories do not need to be tested or challenged. it is always possible for new data to contradict a theory.

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

The missing component to the table to the right or indicated with orange letters complete the table by filling in the corresponding numbers or symbols

Which of the following has wavelength longer than the wavelength of viable light? a) x rays b) gamma rays c) radios waves d) ultraviolet waves