Max discovered a beaker full of transparent liquid in the science lab. he hypothesized that since the liquid is transparent like water, it is water. he shared this conclusion with his friends. his friends questioned his conclusion, but max had no evidence to back his thoughts. what step did max miss in his scientific methods?
make an initial observation.
test a hypothesis by gathering data.
form a conclusion.
state a hypothesis.

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)