Chapters 7+8 Study Guide

What does electronegativity measure?

• The tendency of an atom to attract electrons towards itself in a chemical bond

• The ability of an atom to lose electrons in a chemical reaction

• The strength of a covalent bond between two atoms

• The number of valence electrons in an atom

Which topic is NOT covered in Chapters 7 & 8 Exam Study Guide (Unit 4 Exam)?

• Drawing Lewis structures

• Comparing bond lengths and strengths

• Identifying VSEPR shapes

• Determining polar or nonpolar molecules

What is the concept of covalent bonding?

• Sharing of valence electrons between atoms

• Transfer of valence electrons between atoms

• Attraction between oppositely charged ions

• Formation of metallic bonds

Which of the following are macronutrients?

• Vitamins and minerals

• Simple carbohydrates, complex carbohydrates, protein, and fats

• Water and fiber

• Antioxidants and phytochemicals

Which type of forces are responsible for the solubility of polar molecules?

• Intramolecular forces

• Intermolecular forces

• Ionic forces

• Covalent forces

What is the main focus of Lesson 1?

• Semimetals/metalloids

• Ionic bonds

• Noble gases

• Hydrogen bonds

What does VSEPR theory explain?

• The shapes of molecules

• The octet rule

• The valence electrons

• The exceptions to the octet rule