Chemical Bonds What holds a compound together?

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Presentation transcript:

Chemical Bonds What holds a compound together? The forces that hold atoms or ions together in a compound are called chemical bonds. chemical bond: the attractive force that holds atoms or ions together

Chemical Structure How can the structure of chemical compounds be shown? The structure of chemical compounds can be shown by various models. Different models show different aspects of compounds. chemical structure: the arrangement of atoms in a substance

Chemical Structure, continued Some models represent bond lengths and angles. bond length: the average distance between the nuclei of two bonded atoms bond angle: the angle formed by two bonds to the same atom

Chemical Structure, continued In a ball-and-stick model, atoms are represented by balls. The bonds that hold the atoms together are represented by sticks. In structural formulas, chemical symbols are used to represent the atoms. Space-filling models show the space occupied by atoms.

How Does Structure Affect Properties? What determines the properties of a compound? The chemical structure of a compound determines the properties of that compound.