What is a molecular compound? Bell Work: What is a molecular compound? How is it different from an ionic compound? Turn in the answers when you are done (can use half a paper).

Today: You have a worksheet to work on in groups. I will give you 40 minutes to complete the worksheet then I will call you up by group to go over the answers. Everyone must be in your seat, working on the worksheet. You may not sit on the floor or walk around or you will be sent out.

Molecules and Molecular Compounds 8.1 Molecules and Molecular Compounds Some compounds are so different from ionic compounds that attractions between ions fail to explain their bonding. Atoms that are held together by sharing electrons are joined by a covalent bond.

Molecules and Molecular Compounds 8.1 Molecules and Molecular Compounds A molecule is a neutral group of atoms, usually nonmetals, joined together by covalent bonds. example: Air contains oxygen molecules. A diatomic molecule is a molecule consisting of two atoms. An oxygen molecule is a diatomic molecule.

Molecules and Molecular Compounds 8.1 Molecules and Molecular Compounds A molecular compound contains different atoms in a fixed ratio. Water and carbon monoxide are molecular compounds. Water is a molecular compound with molecules composed of two hydrogen atoms and one oxygen atom. Carbon monoxide is a molecular compound with molecules composed of one carbon atom and one oxygen atom.

Molecules and Molecular Changes 8.1 Molecules and Molecular Changes Ethane, a component of natural gas, is also a molecular compound. Ethane is a component of natural gas. Inferring What information about the ethane molecule given by its molecular formula C2H6 is also given by the drawing shown here?

Molecules and Molecular Compounds 8.1 Molecules and Molecular Compounds Molecules and Molecular Compounds How are the melting points and boiling points of molecular compounds different from those of ionic compounds?

Molecules and Molecular Changes 8.1 Molecules and Molecular Changes Molecular compounds tend to have lower melting and boiling points than ionic compounds.

Molecules and Molecular Compounds 8.1 Molecules and Molecular Compounds Sodium chloride, which is an ionic compound, and water, which is a molecular compound, are compared here. Interpreting Diagrams How do molecular compounds differ from ionic compounds?

8.1 Molecular Formulas Molecular Formulas What information does a molecular formula provide?

A molecular formula is the chemical formula of a molecular compound. 8.1 Molecular Formulas A molecular formula is the chemical formula of a molecular compound. A molecular formula shows how many atoms of each element a molecule contains.

8.1 Molecular Formulas Ammonia (NH3) is used in solution as a cleaning agent. You can represent the ammonia molecule by its molecular formula, its structural formula, a space-filling molecular model, a perspective drawing, or by a ball-and stick molecular model.

8.1 Formulas of Some Molecular Compounds Molecular Formulas The formula of a molecular compound indicates the numbers and kinds of atoms. The arrangement of the atoms within a molecule is called its molecular structure. Using Models Which of these molecules has the greatest number of oxygen atoms?

8.1 Section Quiz. 8.1.

8.1 Section Quiz. 1. Compared to ionic compounds, molecular compounds tend to have relatively low melting points and high boiling points. low melting points and low boiling points. high melting points and high boiling points. high melting points and low boiling points.

8.1 Section Quiz 2. A molecular compound usually consists of two metal atoms and a nonmetal atom. two nonmetal atoms and a metal atom. two or more metal atoms. two or more nonmetal atoms.

8.1 Section Quiz 3. A molecular formula shows how many atoms of each element a molecule contains. a molecule's structure. which atoms are bonded together. how atoms are arranged in space.

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