Day 1 H.L. Name_____________________________________Date______________________Period ________The Structure of the AtomLesson 3.1Early Ideas About MatterIn your textbook, read about the philosophers, John Dalton, and defining the atom.For each statement below, write trueor false.False1. Ancientphilosophers regularly performed controlled experiments.2. Philosophersformulated explanations about the nature of matter based on their own experiences.True 3. Both Democritus and Dalton suggested that matter is made up of atoms.True 4. Dalton’s atomic theory stated that atoms separate, combine, or rearrange in chemical reactions.True 5. Dalton’satomic theory stated that matter is mostly empty space.False 6. Daltonwas correct in thinking that atoms could not be divided into smaller particles.True 7. Dalton’satomic theory stated that atoms of different elements combine in simple whole-number ratios to form compounds.True 8. Daltonthought that all atoms of a specific element have the same mass.False 9. Democritusproposed that atoms are held together by chemical bonds, but no one believed him.10. Dalton’satomic theory was based on careful measurements and extensive research.Lesson 3.2Defining the AtomIn your textbook, read about the electron and the nuclear atom.For each item in Column A, write the letter of the matching item in Column B.Column AColumn BC 1. Proposedthe nuclear atomic modelA 2. Determinedthe mass-to-charge ratio of an electronB 4. Calculatedthe mass of an electronA. ThomsonB.