Putting Atoms together

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Presentation transcript:

Putting Atoms together Section 7.1 Putting Atoms together

Key Terms Molecule – two or more atoms joined together by a chemical bond Chemical formula – tells us the type and number of atoms in a molecule Molecular element – a molecule that is made up of two atoms of the same element. Cl2, Br2, F2, O2

Ionic Compounds Formed by a metal and a nonmetal They have ions (charged particles) Metals are positively charged Nonmetals are negatively charged The metal gives its electron to the non metal Sodium gives its electron to chlorine to make sodium chloride. Gizmo…

Molecular/Covalent Compound Formed by two or more nonmetals They share the electron Gizmo…

Counting Atoms How many of each type of element are present in each compound? C2H6 CaBr2 NH4BrO3

Today’s Tasks Counting Atoms worksheet