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chemistry chapter 11
| Question | Answer |
|---|---|
| If the particles in a sampled of matter have an orderly arrangement and move only in place, the sample is a ________? | solid |
| The process by which a solid becomes a liquid is _______? | melting |
| What has a melting point greater than room temp? | iron |
| a solid with a low melting point is most likely? | covalent |
| the strength of the forces between ions depends on _____? | both the size of the ion and its charge |
| The attraction of the positive end of one molecule for the negative end of a neighboring molecule is a _______? | dipole-dipole force |
| Because of dipole-dipole forces, the melting points of highly polar compounds are ____ those of less polar compounds. | higher than |
| A hydrogen bond is a special form of a ______? | dipole-dipole force |
| A hydrogen bond forms between molecules that contain hydrogen bonded to ________? | a highly electronegative atom |
| London dispersion force is considered a dipole-dipole force because it _____? | results from a temporary dipole |
| A London dispersion force occur between molecules that are ____? | nonpolar |
| the amount of energy needed to melt KCL is that compund's _____? | enthalpy of fusion |
| For one mole of any substance at its boiling point, the difference in the enthalpy of its vapor and the enthalpy of its liquid is its molar _____? | entropy of vaporization |
| Natural events are often accompanied by a ___? | decrease in energy and an increase in disorder |
| Enthalpy changes accompanying a change of state are ____ than those accompanying the heating of a substance at each state. | much larger |
| Pressure has an effect on boiling point because pressure affects ______? | the entropy of a gas |
| What elevation relative to sea level will the boiling point of water be the greatest? | -123 m |
| When particles are moving between two phases and no net change in the amount of either phase occurs, ____ exists. | equilibrium |
| A carbonated beverage over ice contains ____ phases. | three |
| Vapor pressure is measured when a liquid and its vapor are _____? | in equilibrium |
| The tendency of liquids to decrease their surface area to the smallest size possible is called _______? | surface tension |
| When a liquid is heated, the temperature stops rising at the liquids ______? | boiling point |
| When a solid sublimes, it goes from a _____ to a _____. | solid to a gas |
| The total energy content of a system is its ________, and the measure of the systems disorder is its ______. | enthalpy and entropy |
| Of steam, ice water, and crushed ice, _______ has the highest entropy. | steam |
| The instructions on a box of cake mix might give high-altitude instruction for baking the cake. The temp given for baking the cake would be _____ than the temp given for baking it at sea level. | lower |