Question 1

If the temperature is -55 °F,what is the corresponding temperature on the Kelvin scale?

Accepted Answer

A) 225 K 
B) 218 K 
C) 55 K 
D) 273 K 
E) 328 K 
A) 225 K 
B) 218 K 
C) 55 K 
D) 273 K 
E) 328 K

Question 2

A slice of pizza contains 28 g of carbohydrate,13 g of protein and fat.If the pizza contains 280 kcal,how many grams of fat are present?(The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.Give the answer to 2 significant figures.)

Accepted Answer

A) 28 g 
B) 13 g 
C) 10.g 
D) 55 g 
E) 250 g 
A) 28 g 
B) 13 g 
C) 10.g 
D) 55 g 
E) 250 g

Question 3

Bromine   )has a freezing point of -7 °C,and a boiling point of 60 °C.
Indicate the state present or the change of state occurring at each temperature.
-70 °C

Accepted Answer

The answer of Bromine   )has a freezing point...

Question 4

When a solid is converted directly to a gas,the change of state is called ________.

Accepted Answer

A) freezing 
B) melting 
C) boiling 
D) condensation 
E) sublimation 
A) freezing 
B) melting 
C) boiling 
D) condensation 
E) sublimation

Question 5

A temperature of 20°C is equivalent to ________ K.

Accepted Answer

The answer of A temperature of 20°C is equivalent to...

Question 6

An object with a temperature of 20.°C is hotter than another object with a temperature of 20.°F.

Accepted Answer

A) True 
 B)False

Question 7

The amount of heat necessary for one gram of a substance to change from the solid state to the liquid state at its melting point is the ________.

Accepted Answer

The answer of The amount of heat necessary for one...

Question 8

Which of the following does not involve a change of state?

Accepted Answer

A) melting ice 
B) freezing water 
C) vaporization of alcohol 
D) sublimation of dry ice 
E) pouring water into a vacuum-insulated bottle 
A) melting ice 
B) freezing water 
C) vaporization of alcohol 
D) sublimation of dry ice 
E) pouring water into a vacuum-insulated bottle

If the temperature is -55 °F,what is the corresponding temperature on the Kelvin scale?

A slice of pizza contains 28 g of carbohydrate,13 g of protein and fat.If the pizza contains 280 kcal,how many grams of fat are present?(The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.Give the answer to 2 significant figures.)

Bromine )has a freezing point of -7 °C,and a boiling point of 60 °C. Indicate the state present or the change of state occurring at each temperature. -70 °C

When a solid is converted directly to a gas,the change of state is called ________.

A temperature of 20°C is equivalent to ________ K.

An object with a temperature of 20.°C is hotter than another object with a temperature of 20.°F.

The amount of heat necessary for one gram of a substance to change from the solid state to the liquid state at its melting point is the ________.

Which of the following does not involve a change of state?

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Exam 3: Matter and Energy

If the temperature is -55 °F,what is the corresponding temperature on the Kelvin scale?

A slice of pizza contains 28 g of carbohydrate,13 g of protein and fat.If the pizza contains 280 kcal,how many grams of fat are present?(The caloric values are: 4 kcal/g for carbohydrate,9 kcal/g for fat,and 4 kcal/g for protein.Give the answer to 2 significant figures.)

Bromine )has a freezing point of -7 °C,and a boiling point of 60 °C. Indicate the state present or the change of state occurring at each temperature. -70 °C

When a solid is converted directly to a gas,the change of state is called ________.

A temperature of 20°C is equivalent to ________ K.

An object with a temperature of 20.°C is hotter than another object with a temperature of 20.°F.

The amount of heat necessary for one gram of a substance to change from the solid state to the liquid state at its melting point is the ________.

Which of the following does not involve a change of state?

Chemistry in Our Lives

Chemistry and Measurement

Atoms and Elements

Nuclear Chemistry

Ionic and Molecular Compounds

Chemical Quantities and Reactions

Gases

Solutions

Acids and Bases and Equilibrium

Introduction to Organic Chemistry: Hydrocarbons

Alcohols, Thiols, Ethers, Aldehydes, and Ketones

Carbohydrates

Carboxylic Acids, Esters, Amines, and Amides

Lipids

Amino Acids, Proteins, and Enzymes

Nucleic Acids and Protein Synthesis

Metabolic Pathways and Energy Production

Filters