Why did Thomson’s results from experimenting with cathode rays cause a big change in scientific thought about atoms?

A. His results gave people a picture of what atoms look like for the first time.
B. His results gave the first clues that atoms could be created and destroyed.
C. His results gave the first experimental evidence that matter is made up of atoms.
D. His results gave the first evidence that atoms were made up of smaller particles.

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

Name the element in group 17, period 2. (periodic table)

How many liters of oxygen gas, at standard temperature and pressure, will react with 35.8 grams of iron metal? 4 fe (s) + 3 o₂ (g) → 2 fe₂o₃ (s)