Types of Matter Element “LIST OF ELEMENT YOU SHOULD KNOW”

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Presentation transcript:

Types of Matter Element “LIST OF ELEMENT YOU SHOULD KNOW” Pure substance One kind of atom Smallest particle of matter that maintains chemical identity Represented by one or two letter symbol Example: Helium (He) “LIST OF ELEMENT YOU SHOULD KNOW” Episode 202

Compound Two or more elements chemically combined (bonded) http://www.youtube.com/watch?v=5PVCC_vp54I&feature=related Compound Two or more elements chemically combined (bonded) Represented by chemical formula Example: water (H2O) H2O decomposes into hydrogen gas and oxygen gas Combine in same proportion H2O always contains 2 atoms of hydrogen and 1 atom of oxygen Episode 202

Pure substances (elements and compounds) are homogeneous Mixture Two or more substances physically combined Separated by physical means Do not combine in same proportions Heterogeneous mixture Not uniform in composition Homogeneous mixture (solution) Uniform compostion Alloy Solution of two or more metals Pure substances (elements and compounds) are homogeneous Episode 202

E C C C S HE HE E C E S HE Carbon monoxide Steel Calcium Lead Milk Hydrogen peroxide Carbon dioxide Pizza Salad dressing Rust Apple juice E C Carbon Carbon monoxide Steel Calcium Lead Milk C C S HE HE E C E S HE Episode 202