Jeopardy Final Jeopardy LAB $100 $100 $100 $100 $100 $200 $200 $200 MATH SKILLS 1 MATH SKILLS 2 MATH SKILL 3 MATH SKILLS 4 $100 $100 $100 $100 $100 $200 $200 $200 $200 $200 $300 $300 $300 $300 $300 $400 $400 $400 $400 $400 $500 $500 $500 $500 $500 Final Jeopardy

1 - $100 The modern model of the atom is based on the work of A) one scientist over a short period of time B) one scientist over a long period of time C) many scientists over a short period of time D) many scientists over a long period of time D

1 - $200 A student investigated the physical and chemical properties of a sample of an unknown gas and then identified the gas. Which statement represents a conclusion rather than an experimental observation? A)  The gas is colorless. B)  The gas is carbon dioxide. C)  When the gas is bubbled into limewater, the liquid becomes cloudy. D)  When placed in the gas, a flaming splint stops burning. B

1 - $300 Which of the following statements contained in a student's laboratory report is a conclusion? A) A gas is evolved. B) The gas is insoluble in water. C) The gas is hydrogen. D) The gas burns in air. D

1 - $400 Which process is represented by this diagram? A) chromatography B) electrolysis C) distillation D) titration A

1 - $500 Which pieces of equipment are indicated by arrows A and B, respectively? A) buret and Erlenmeyer flask B) buret and volumetric flask C) pipet and Erlenmeyer flask D) pipet and volumetric flask A

2 - $200 An aluminum sample has a mass of 80.01 g and a density of 2.70 g/cm3. According to the data, to what number of significant figures should the calculated volume of the aluminum sample be expressed? A) 1 B) 2 C) 3 D) 4 C

2 - $100 Which temperature change indicates an increase in the average kinetic energy of the molecules in a sample? A) 15 C TO 298 K B) 37 C TO 273 K C) 305 K TO 0 C D) 355 K TO 25 C A

2 - $300 Which unit is used to express the pressure of a gas? A) mole B) joule C) kelvin D) pascal D

2 - $400 A sample of an element has a mass of 34.261 grams and a volume of 3.8 cubic centimeters. To which number of significant figures should the calculated density of the sample be expressed? A) 5 B) 2 C) 3 D) 4 B

2 - $500 C Which quantity of heat is equal to 200. joules? A) 20.0 kJ B) 2.00 kJ C) 0.200 kJ D) 0.0200 kJ C

3 - $100 Expressed to the correct number of significant figures, the sum of two masses is 445.2 grams. Which two masses produce this answer? A) 210.10 g + 235.100 g B) 210.100 g + 235.10 g C) 210.1 g + 235.1 g D) 210.10 g + 235.10 g C

3 - $200 C Which mass measurement contains four significant figures? A) 0.086 g C) 1003 g B) 0.431 g D) 3870 g C

3 - $300 During a laboratory experiment, a sample of aluminum is found to have a mass of 12.50 grams and a volume of 4.6 milliliters. What is the density of this sample, expressed to the correct number of significant figures? A) 2.717 g/mL B) 2.72 g/mL C) 3 g/mL D) 2.7 g/mL D

3 - $400 What is the product of (2.324 cm × 1.11 cm) expressed to the correct number of significant figures? A) 2.58 cm2 B) 2.5780 cm2 C) 2.5796 cm2 D) 2.57964 cm2 A

3 - $500 Which measurement contains a total of three significant figures? A) 0.012 g B) 0.125 g C) 1,205 g D) 12,050g B

4 - $100 What is the safest method for diluting concentrated sulfuric acid with water? A)  add the acid to the water quickly B)  add the water to the acid quickly C) add the acid to the water slowly while stirring D) add the water to the acid slowly while stirring C

4 - $200 When a sample of CO2(s) becomes CO2(g), there is a change in A) bond type B) gram-formula mass C) molecular polarity D) particle arrangement D

4 - $300 B The joule is a unit of A) concentration B) energy C) pressure D) volume B

4 - $400 A) mass C) density B) volume D) temperature A 10.0-gram sample of nitrogen is at STP. Which property will increase when the sample is cooled to 72 K at standard pressure? A) mass C) density B) volume D) temperature

4 - $500 B Which process represents a chemical change? A) melting of ice B) corrosion of copper (RUST) C) evaporation of water D) crystallization of sugar B

5 - $100 Three forms of energy are A) chemical, exothermic, and temperature B) chemical, thermal, and electromagnetic C) electrical, nuclear, and temperature D) electrical, mechanical, and endothermic B

5 - $200 C Which process is exothermic? A) boiling of water B) melting of copper C) condensation of ethanol vapor D) sublimation of iodine C

5 - $300 B Which change of phase is exothermic? A) solid to liquid B) gas to liquid C) solid to gas D) liquid to gas B

5 - $400 B Which physical changes are endothermic? A) melting and freezing B) melting and evaporating C) condensation and sublimation D) condensation and deposition B

5 - $500 A real gas behaves least like an ideal gas under the conditions of A) low temperature and low pressure B) low temperature and high pressure C) high temperature and low pressure D) high temperature and high pressure B

Final Jeopardy What is the total number of Joules of heat energy absorbed by 15 grams of water when it is heated from 30.oC to 40.oC? A) 42 J B) 63 J C) 130 J D) 630 J D