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The energy of position is called kinetic energy.

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Which state of matter has atomic spacing that is close together and indefinite shape?


A) liquid
B) solid
C) gas
D) plasma
E) none of the above

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How much heat (kJ) is needed to raise the temperature of 100.0 grams of water from 25.0°C to 50.0°C?


A) 10450
B) 0.598
C) 1.05
D) 10.5
E) none of the above

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Like mass,energy can neither be created nor destroyed.

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What is the value of 27°C on the Kelvin temperature scale?


A) 273
B) 246
C) 300
D) 81
E) none of the above

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Given the table of specific heat values below,what is the identity of a 26.2 g metal sample that increases by 8.5°C when 100.0 J of energy is absorbed? Element Specific Heat(J/g°C) Au 0.128 Ag 0.235 Cu 0.385 Fe 0.449 Al 0.903


A) Fe
B) Al
C) Au
D) Ag
E) none of the above

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What is the value of 98 °F in units of °C?


A) 72
B) 37
C) 371
D) 22
E) none of the above

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How would you classify raisin bran?


A) pure substance-compound
B) mixture-heterogeneous
C) pure substance-element
D) mixture-homogeneous
E) none of the above

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What is the value of 335 K on the Celsius temperature scale?


A) 62
B) 167
C) 608
D) 66.4
E) none of the above

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An energy diagram that shows the reactants having greater energy than the products illustrates an


A) endothermic reaction.
B) exothermic reaction.
C) isothermic reaction.
D) impossible reaction.
E) none of the above

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When methane is burned with oxygen the products are carbon dioxide and water.If you produce 36 grams of water and 44 grams of carbon dioxide from 16 grams of methane,how many grams of oxygen were needed for the reaction?


A) 32
B) 80
C) 96
D) 64
E) none of the above

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How much heat (kJ) is absorbed by 948.0 g of water in order for the temperature to increase from 25.00°C to 32.50°C?


A) 7.5
B) 31.4
C) 30.2
D) 29.7
E) none of the above

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Water is a mixture.

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In a chemical reaction,the substances present after the chemical change are called reactants.

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The corrosion of iron is a physical change.

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How many joules are there in a 255 calorie snack bar?


A) 2.55 × 105
B) 1.07 × 106
C) 1.07 × 103
D) 6.09 × 104
E) none of the above

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How many calories are there in a 255 Calorie snack bar?


A) 2.55 × 105
B) 1.07 × 103
C) 60.9
D) 1 × 103
E) none of the above

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Which of the following items is NOT a common unit of energy?


A) joule
B) torr
C) calorie
D) kilowatt-hour
E) none of the above

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A chemical change occurs when matter does not change its composition.

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Consider the following specific heats of metals. Metal Specific Heat (J/g∙°C) Aluminum 0.903 Copper 0.385 Gold 0.128 Iron 0.449 Silver 0.235 If the same amount of heat is added to 50.0 g samples of each of the metals,which are all at the same temperature,which metal will reach the highest temperature?


A) aluminum
B) copper
C) gold
D) iron
E) silver

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