Chemistry

Democritius

• whole universe is atoms and empty's space

• is composed of extremely small particles

• given element that identical in size, mass, and other properties

• differ in size and properties

all matter

• whole universe is atoms and empty's space

• is composed of extremely small particles

• given element that identical in size, mass, and other properties

• differ in size and properties

atoms

• whole universe is atoms and empty's space

• is composed of extremely small particles

• given element that identical in size, mass, and other properties

• differ in size and properties

atoms of different elements

• whole universe is atoms and empty's space

• is composed of extremely small particles

• given element that identical in size, mass, and other properties

• differ in size and properties

law of conservation of mass

• atoms cannot be subdivided, created, or destoryed

• found most of everything about atoms

• atoms of different elements combine in simple whole number ratios to form chemical compounds

• in chemical reactions, atoms are combined, separated, or rearranged

Dalton

• atoms cannot be subdivided, created, or destoryed

• found most of everything about atoms

• atoms of different elements combine in simple whole number ratios to form chemical compounds

• in chemical reactions, atoms are combined, separated, or rearranged

law of conservation

• atoms cannot be subdivided, created, or destoryed

• found most of everything about atoms

• atoms of different elements combine in simple whole number ratios to form chemical compounds

• in chemical reactions, atoms are combined, separated, or rearranged

law of definite and multiple

• atoms cannot be subdivided, created, or destoryed

• found most of everything about atoms

• atoms of different elements combine in simple whole number ratios to form chemical compounds

• in chemical reactions, atoms are combined, separated, or rearranged

law of conversation

• atoms cannot be subdivided, created, or destoryed

• found most of everything about atoms

• atoms of different elements combine in simple whole number ratios to form chemical compounds

• in chemical reactions, atoms are combined, separated, or rearranged

Not all apsects of

• Dalton Atomic theory have proven to be correct

• Atoms are divisible into even smaller particles

  A given element can have atoms with different masses

• discovered electrons with a cathode ray tube and a magnet

• smallest particles of an element that has chemical properties