This document contains information about elements and compounds presented in tables and sections. It includes:
1. Tables with elements categorized by atomic number.
2. Sections discussing properties and reactivity of elements, compounds, and molecular structures.
3. Exercises involving elements, compounds, molecular formulas and equations.
1. The document discusses chemical formulas and ionic compounds.
2. Various ions like Ca2+, N3-, and their chemical formulas like Ca3N2 are listed.
3. Combinations of ions that form compounds are shown along with the chemical formulas of the corresponding ionic compounds.
This document discusses chemical formulas and equations. It covers 1) writing chemical formulas for common compounds using chemical symbols and subscript numbers, 2) balancing chemical equations by adjusting subscript numbers, and 3) using chemical equations to represent chemical reactions and calculate mole ratios between reactants and products.
This document discusses chemical formulas and compounds. It covers 1) types of chemical formulas, 2) naming compounds based on their chemical formulas, and 3) writing formulas based on compound names. Some example chemical formulas and names provided include NaCl, HCl, Li2O, and H2SO4. The document also mentions valence electrons and reactivity patterns related to chemical formulas.
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