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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/i mage/atom.gif

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

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Page 1: 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

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

Page 2: 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

Elements

• A substance consisting of a single type of atom.

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

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

http://www.reachoutmichigan.org/funexperiments/agesubject/lessons/

handouts/helium.GIF

Page 3: 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

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/

Page 4: 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

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.

http://www.awwu.biz

Page 5: 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

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.

http://www.awwu.biz

Page 6: 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

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 Glucose -C-C66HH1212OO66

Page 7: 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

Formulas

6C6C66HH1212OO66

Elements in the compound:

Carbon

Hydrogen

Oxygen

Page 8: 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

Formulas:Subscripts

6C6C66HH1212OO66

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

Carbon - 6

Hydrogen - 12

Oxygen - 6

Page 9: 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

Formulas:Coefficients

6C6C66HH1212OO66

# of molecules:

6 molecules of glucose


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