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Atoms, Molecules and Matter

Atoms, Molecules and Matter. Copy the Concept Map to the Right and Fill it in with the words below: ATOMS COMPOUNDS MATTER. Is composed of…. Bond together to form…. Atoms, Molecules and Matter. Matter. Is composed of…. Atoms. Bond together to form…. Compounds. Matter.

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Atoms, Molecules and Matter

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  1. Atoms, Molecules and Matter Copy the Concept Map to the Right and Fill it in with the words below: ATOMS COMPOUNDS MATTER Is composed of… Bond together to form…

  2. Atoms, Molecules and Matter Matter Is composed of… Atoms Bond together to form… Compounds

  3. Matter • Matter is the “stuff” of which the universe is composed. • Two characteristics: has mass and occupies space.

  4. Atoms • Can we see atoms? • Scanning Tunneling Microscope • Matter is composed of tiny particles called atoms. A scanning tunneling microscope image of 5 nm gold nanoparticles www.chem.utoronto.ca/ staff/DHIRANI/

  5. Compound vs Molecules • A molecule is formed when two or more atoms join together chemically. • A compound is a molecule that contains at least two different elements. • All compounds are molecules but not all molecules are compounds.

  6. Each unit is a molecule

  7. Molecules • Molecular hydrogen (H2), and molecular oxygen (O2) are molecules because each is composed of a single element. • Water (H2O), carbon dioxide (CO2) and methane (CH4) are compounds because • each is made from more than one element. • The smallest bit of each of these substances would be referred to as a molecule.

  8. Compounds • Atoms of different elements can join together by chemical bonds to form a compound • A compound has totally different properties from its elements

  9. Sodium Chloride • Sodium: Silvery White Metal Chlorine: Pale Green Gas http://en.wikipedia.org/wiki/Sodium http://en.wikipedia.org/wiki/Chlorine

  10. Diatomic Molecules NOFClBrI [H] Nitrogen Bromine Oxygen Iodine Fluorine Hydrogen Chlorine

  11. Diatomic Molecules BrINClHOF Bromine Iodine Nitrogen Chlorine Hydrogen Oxygen Fluorine

  12. States of Matter Solid Liquid Gas Model

  13. Mixtures • A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs. • A mixture can usually be separated back into its original components. What are examples of mixtures?

  14. Prefixes • Homo: • Greek = Same • Latin = Human • Hetero: • Greek = Mixed What words using these prefixes come to mind?

  15. Mixtures • Homogenous Mixture: the particles are mixed so well that the separate parts cannot be seen (Salt Water) • Heterogenous Mixture: the different parts can be easily seen (Salt and Pepper)

  16. Sand

  17. Sand close up collections.ic.gc.ca/.../ magnified-sand_sa.htm

  18. Homogeneous Heterogeneous Homogeneous Heterogeneous

  19. Element Diamond Bucky Ball

  20. Atom Carbon Bohr Model

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