Multiple Choice 1. Which statement best describes intermolecular forces in general? a. Covalent bonds within a network solid. b. Forces within covalent molecules that hold them together. с. Electrostatic forces between ions. d. Bonds between hydrogen and oxygen atoms in water molecules. Attractive forces between separate molecules. е. 2. A binary compound is found to be non-polar. What molecular geometry could this compound have? а. Bent (AX,) b. Angular (AX;) c. Trigonal planar (AX;) d. Trigonal pyramidal (AX;) See-saw (AX,) е. 3. Which forces exist between methane particles? London dispersion forces ii. Metallic bonding iii. Hydrogen bonding i. iv. Electrostatic attraction i only b. i and iv only d. i, iii, and iv only e. i, ii, and iii only а. c. i and iii only Matching Questions Use the following terms to identify the correct definition below. a. London dispersion force d. Low melting point b. linear e. Metal ions in a sea of electrons c. trigonal pyramidal f. Trigonal planar 4. The molecular shape with bond angles greater than 120°. A general description of metallic crystal aggregates. A property explained by weak intermolecular force of attraction. 5. 6.
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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