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Christy and Savannah Savannah 1:Hello! My name is Savannah Weber. I am from Honalulu, Hawaii. It is very warm here today! I hope that you are having a good day today!

Associates: Your assigned atomic model is: Dalton
Christy 1: Hello Ms. Weber! As you probably know, we were assigned to make a model and movie on the Dalton atomic model. I don't want our model to be too big but not too small either. So we will need to think of what materials we could use to make our models. Also, for our movie we will need to Photo Story 3 or some kind of program similar to that. We need to find some ways to make our movie interesting because we don't want people to think as our project as boring. I would love to hear your opinions about our project and what you think about what I have said. Have a good day Ms. Weber! I hope to hear from you soon.

Christy 2: John Dalton suggested atoms. The idea of atoms had been proposed much earlier. The main ideas of Dalton's theory were 1) All substances are composed of small, dense, indestructible particles called atoms. 2) Atoms of a given substance are identical in mass, size, and shape. 3) An atom is the smallest part of an element that enters into a chemical change. Atoms may combine, or combinations of atoms may break down, but the atoms themselves are unchanged. 4) When atoms form molecules, they unite in small whole-number ratios (1:1, 1:2, 2:3, etc.).

Here is a picture of what John Dalton looks like.



Please do some more research and let me know what you find! Thank you! Christy Kimbrough

Savannah 2: More facts on John Dalton and his atomic model:

Dalton's Atomic Theory It was in the early 1800s that **John Dalton**, an observer of weather and discoverer of color blindness among other things, came up with his atomic theory.Less than twenty years earlier, in the 1780's, **Lavoisier** ushered in a new chemical era by making **careful quantitative measurements** which allowed the compositions of compounds to be determined with accuracy. In 1803 Dalton noted that oxygen and carbon combined to make two compounds. Of course, each had its own particular weight ratio of oxygen to carbon (1.33:1 and 2.66:1), but also, for the same amount of carbon, one had exactly twice as much oxygen as the other. This led him to propose the **Law of Simple Multiple Proportions**, which was later verified by the Swedish chemist Berzelius. **In an attempt to explain how and why elements would combine with one another in fixed ratios and sometimes also in multiples of those ratios, Dalton formulated his atomic theory.

ALSO....**

Dalton's theory was based on the premise that the atoms of different elements could be distinguished by differences in their weights. He stated his theory in a lecture to the Royal Institution in 1803. The theory proposed a number of basic ideas:


 * All matter is composed of atoms
 * Atoms cannot be made or destroyed
 * All atoms of the same element are identical
 * Different elements have different types of atoms
 * Chemical reactions occur when atoms are rearranged
 * Compounds are formed from atoms of the constituent elements.



Have a great day!!! Savannah