Chapter+11

=**Josh, Shannon, Brodey**=

Democritus- He called an uncutable particle an atom Believed atoms were always in motion Believed matter was imperishable.

Dalton- Elements combine based on mass to form different compounds Hydrogen + Oxygen = Water Elements combine in specific proportions because they are made up of individual atoms Five main points of Dalton's Atomic Theory
 * Elements are made of tiny particles called atoms.
 * All atoms of a given element are identical.
 * The atoms of a given element are different from those of any other element; the atoms of different elements can be distinguished from one another by their respective relative weights.
 * Atoms of one element can combine with atoms of other elements to form compounds; a given compound always has the same relative numbers of types of atoms.
 * Atoms cannot be created, divided into smaller particles, nor destroyed in the chemical process; a chemical reaction simply changes the way atoms are grouped together.

Thomson-

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