{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

lecture%207%20%28chapt5%29 - Chapter 5 Exam is not graded...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
1 Chapter 5 Exam is not graded yet- I hope to hand them back on Wed One of the main quests of science throughout the ages has been to discover what matter is made of - and what holds it together.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
2 Democritus Greek Philosopher About 450 B.C All matter is composed of tiny indivisible particles. Named these particles atomos meaning “indivisible” Aristotle Greek Philosopher About same time as Democritus Disagreed with Democritus Did not believe in atoms 4 elements: Earth Air Water Fire John Dalton 1803 Dalton’s Atomic Theory of Matter: Each element is composed of extremely small particles called atoms All atoms of a given element are identical, but they differ from those of any other element. Atoms are neither created nor destroyed. A given compound always has the same relative numbers and kinds of atoms. Dalton’s Model of the Atom : Billiard Ball Model: the same throughout An An atom atom is the is the smallest and simplest smallest and simplest unit into which an element can be divided while which an element can be divided while maintaining the properties of the element. maintaining the properties of the element.
Background image of page 2