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Elements, Mixtures and Compounds Chemistry is the study of physical matter, such as state of matter (gas, liquid or solid), chemical form (element, mixture or compound), chemical structure (atoms or molecules, etc.).
Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Classify each material below as an element, a compound, a heterogeneous mixture, or a homogeneous mixture (solution). Follow the flow chart provided on page 12 and read the information provided in the background section as a guideline.
compound, or mixture. Review: An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.
For a fully interactive version with orbitals, isotopes, compounds, and free printouts, visit http://www.ptable.com/
Listed below are the atomic numbers, names, and symbols of the most common elements. The atomic number is used to determine the place of the element in the periodic table, it also has other meaning as you will find out later in the course. Become familiar with the names and symbols of these elements. Atomic Atomic
9.0122 11 Na sodium 22.990 12 Mg magnesium 24.305 [24.304, 24.307] 19 K potassium 39.098 20 Ca calcium 40.078(4) 37 Rb rubidium 85.468 38 Sr strontium 87.62 55 Cs caesium 132.91 56 Ba barium 137.33 87 Fr francium 88 Ra radium 5 B boron 10.81 [10.806, 10.821] 13 Al aluminium 26.982 31 Ga gallium 69.723 49 In indium 114.82 81 Tl thallium 204.38 ...
