them test atoms and compounds

Question 1

John daltons atomic theory

Answer 1

• all substances are made of tiny solid, neutral, indivisible particles called atoms
• the atoms of a given element are identical; the atoms of different elements are different in some fundamental way
• chemical compounds are formed when atoms of different elements combine with each other
• chemical reactions involve reorganization of the atoms. atoms themselves are not changed in a chemical reaction.

Question 2

how does a mass spectrometer work?

Answer 2

• the sample is heated and the gas is ionized
• the ions are shot through a slit through a strong magnetic field
• the magnetic field exerts a force on ions causing them to deflect their motion
• the ions with the lightest mass are deflected the most and the ions with the heaviest mass are deflected the least.