Presentation on theme: "Notes on Compounds and mixtures"— Presentation transcript:
1 Notes on Compounds and mixtures Examples: Water H2OSugar C6H12O6Salt NaClCarbon Dioxide CO2Characteristics: The properties of compounds are very different from the properties of the elements that combine to form them. It requires a chemical change to separated the elements.
2 Mixtures: Examples: air, muddy water, sugar water, sand Characteristics: Its components can be separated by physical means. It is made up of two or more compounds. Its components keep their own properties.
3 Compound or Mixture? Water Air Muddy water Ice Sugar water Sand Sugar saltSalt waterCarbon dioxide continue on next slide
4 Compound or Mixture? Its components can be separated by physical means It has properties that differ from those of its separate elementsIt can be formed by atoms sharing electronsIt can be formed by negative and positive ions joiningIt is made up of two or more compoundsIts components keep their own propertiesIt requires a chemical change to be separated.
5 Types of MixturesSolution – a mixture of two or more substances that is homogeneous at the molecular level; a solution consists of a solute and a solvent.Homogeneous – a mixture in which every sample of it has the same compositionHeterogeneous – a mixture in which every sample of it might have a different composition.