Atoms, Elements, Compounds and Mixtures Explained

Chapter 11: Atoms, Elements, Compounds, and Mixtures Table of Contents Section 3: Compounds and Mixtures Section 1: Models of the Atom Section 2: The Simplest Matter

[object Object],[object Object],First Thoughts Models of the Atom 1

[object Object],[object Object],First Thoughts Models of the Atom 1 ,[object Object]

[object Object],[object Object],Describing the Unseen Models of the Atom 1 ,[object Object]

[object Object],[object Object],A Model of the Atom Models of the Atom 1 ,[object Object]

[object Object],Dalton's Concept Models of the Atom 1 ,[object Object],1. matter is made up of atoms 2. atoms cannot be divided into smaller pieces 3. all the atoms of an element are exactly alike 4. different elements are made of different kinds of atoms

[object Object],Scientific Evidence Models of the Atom 1 ,[object Object],[object Object]

[object Object],A Strange Shadow Models of the Atom 1 ,[object Object]

[object Object],Cathode Rays Models of the Atom 1 ,[object Object],[object Object]

[object Object],Discovering Charged Particles Models of the Atom 1 ,[object Object]

[object Object],Discovering Charged Particles Models of the Atom 1

[object Object],The Electron Models of the Atom 1 ,[object Object],[object Object],[object Object]

[object Object],Thomson's Atomic Model Models of the Atom 1 ,[object Object]

[object Object],Thomson's Atomic Model Models of the Atom 1 ,[object Object],[object Object]

Rutherford's Experiments Models of the Atom 1 ,[object Object],model of the atom was correct.

Rutherford's Experiments Models of the Atom 1 ,[object Object],of matter, called alpha particles, at a thin film of a metal such as gold.

[object Object],Expected Results Models of the Atom 1

[object Object],Expected Results Models of the Atom 1 ,[object Object]

[object Object],The Model Fails Models of the Atom 1 ,[object Object]

[object Object],The Model Fails Models of the Atom 1

[object Object],A Model with a Nucleus Models of the Atom 1

The Proton Models of the Atom 1 ,[object Object],region of space at the center of the atom called the nucleus.

[object Object],The Proton Models of the Atom 1 ,[object Object]

[object Object],The Neutron Models of the Atom 1 ,[object Object],[object Object]

[object Object],The Neutron Models of the Atom 1 ,[object Object],Click image to view movie.

[object Object],The Neutron Models of the Atom 1 ,[object Object]

[object Object],Size and Scale Models of the Atom 1 ,[object Object]

[object Object],Further Developments Models of the Atom 1 ,[object Object]

[object Object],The Electron Cloud Model Models of the Atom 1 ,[object Object]

1 Section Check Question 1 Explain why early Greek philosophers thought that matter was composed of atoms. NC: 1.05

1 Section Check Answer The early Greeks didn’t do experiments; they relied only on reasoning. They reasoned that if you kept cutting something in half, eventually you would have a piece so small it couldn’t be cut any more. NC: 1.05

1 Section Check Question 2 The first modern atomic theory was proposed by _______. A. Aristotle B. Dalton C. Rutherford D. Thompson NC: 4.03

1 Section Check Answer The answer is B. John Dalton was a 19th century English school teacher. He thought atoms were tiny, hard spheres. NC: 4.03

1 Section Check Question 2 A cathode-ray tube has two electrodes, one at either end. These are known as the _______ and the _______. NC: 1.07

1 Section Check Answer The answer is cathode and anode. Sometimes a cathode-ray tube is abbreviated to CRT. NC: 1.07

Atoms, Elements, Compounds and Mixtures Explained

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Atoms, Elements, Compounds and Mixtures Explained