Atoms
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Atoms PowerPoint PPT Presentation


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Atoms. The basic component of all matter. The atom is the smallest particle of an element that has all of the chemical properties of that element. Atoms consist of a nucleus of protons and neutrons surrounded by electrons. http://www.ktf-split.hr/glossary/image/atom.gif. Elements.

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Atoms

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Atoms

Atoms

  • The basic component of all matter.

  • The atom is the smallest particle of an element that has all of the chemical properties of that element.

  • Atoms consist of a nucleus of protons and neutrons surrounded by electrons.

http://www.ktf-split.hr/glossary/image/atom.gif


Elements

Elements

  • A substance consisting of a single type of atom.

  • It cannot be broken down into different kinds of matter.

http://www.reachoutmichigan.org/funexperiments/agesubject/lessons/handouts/helium.GIF

http://www.rentrain.com/resources/Helium%20Safety.jpg


Combinations of elements mixtures

Combinations of Elements:Mixtures

  • A substance consisting of two or more substances mixed together.

  • Mixtures can usually be separated by mechanical means.

  • Two or more substances mixed together in such a way that each remains unchanged.

http://www.seelecttea.com/


Combinations of elements compounds

Combinations of Elements:Compounds

  • A substance formed from two or more elements, with a fixed ratio determining the composition.

  • The elements lose their individual chemical properties and the compound has new properties.

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Molecules

Molecules

  • Compound of two or more atoms, the smallest unit of chemical compounds.

  • The smallest particle of a substance that has all of the physical and chemical properties of that substance.

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Formulas

Formulas

  • The formula which identifies the atoms and the number of each kind in the molecules of a compound.

  • The number and types of atoms in a molecule.

Glucose -C6H12O6


Formulas1

Formulas

6C6H12O6

Elements in the compound:

Carbon

Hydrogen

Oxygen


Formulas subscripts

Formulas:Subscripts

6C6H12O6

# of atoms of each element in a molecule of the compound:

Carbon - 6

Hydrogen - 12

Oxygen - 6


Formulas coefficients

Formulas:Coefficients

6C6H12O6

# of molecules:

6 molecules of glucose


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