Question 1

Barium iodide contains 35.1% barium by mass.What mass of iodine is contained in 8.50g of barium iodide?

Accepted Answer

A)  2.98g
B)  5.52g
C)  8.00g
D)  2.54g

Question 2

What mass of water at 10.0°C is needed to cool 500.0 mL of tea from 25.0°C to 18.3°C? Assume that density and specific heat of the tea are the same as water.

Accepted Answer

A)  4.0 x 102 g
B)  2.2 x 102 g
C)  1.1 x 103 g
D)  6.2 x 102 g

Question 3

How many kiloJoules of energy are released when 1600.g of water cools from 80.0º C to 60.0º C?

Accepted Answer

A)  32.0 kJ
B)  382 kJ
C)  515 kJ
D)  134 kJ

Question 4

8.50g of potassium combines with 7.71g of chlorine to form potassium chloride.What is the percent by mass of potassium in potassium chloride?

Accepted Answer

A)  52.4% 
B)  64.8%
C)  47.6%
D)  60.7%

Question 5

Melting and boiling are examples of physical changes.

Accepted Answer

A) True 
 B)False

Question 6

An example of a chemical property is

Accepted Answer

A)  TNT is explosive.
B)  gasoline is flammable.
C)  zinc reacts with hydrochloric acid to produce hydrogen gas.
D)  all the above

Question 7

A 400.0g metal bar requires 6.446 kJ of energy to change its temperature from 18.0ºC to 95.0ºC.What is the specific heat of the metal?

Accepted Answer

A)  0.895 J/gºC
B)  161 J/gºC
C)  2.09 X 10-4 J/gºC
D)  0.209 J/gºC

Question 8

In a physical change new substances are formed.

Accepted Answer

A) True 
 B)False

Question 9

Which is a physical change?

Accepted Answer

A)  A piece of sulfur burns
B)  Ice melts
C)  Iron corrodes
D)  A nail rusts

Question 10

12.0g of copper combine with iodine to form 36.0g of copper(I) iodide.What is the percent by mass of iodine in copper(I) iodide?

Accepted Answer

A)  12.0%
B)  33.3%
C)  24.0%
D)  66.7%

Question 11

Color,taste,odor,density,and boiling point are all physical properties.

Accepted Answer

A) True 
 B)False

Question 12

Combining hydrogen and oxygen to form water is a

Accepted Answer

A)  chemical change.
B)  physical change.
C)  conservation reaction.
D)  none of these.

Exam 4: Properties of Matter

12.0g of copper combine with iodine to form 36.0g of copper(I) iodide.What is the percent by mass of iodine in copper(I) iodide?

Correct Answer
verified

What mass of water at 10.0°C is needed to cool 500.0 mL of tea from 25.0°C to 18.3°C? Assume that density and specific heat of the tea are the same as water.

Correct Answer
verified

Melting and boiling are examples of physical changes.

Correct Answer
verified

In a physical change new substances are formed.

Correct Answer
verified

An example of a chemical property is

Correct Answer
verified

Which is a physical change?

Correct Answer
verified

Barium iodide contains 35.1% barium by mass.What mass of iodine is contained in 8.50g of barium iodide?

Correct Answer
verified

How many kiloJoules of energy are released when 1600.g of water cools from 80.0^º C to 60.0^º C?

Correct Answer
verified

8.50g of potassium combines with 7.71g of chlorine to form potassium chloride.What is the percent by mass of potassium in potassium chloride?

Correct Answer
verified

Color,taste,odor,density,and boiling point are all physical properties.

Correct Answer
verified

Combining hydrogen and oxygen to form water is a

Correct Answer
verified

A 400.0g metal bar requires 6.446 kJ of energy to change its temperature from 18.0^ºC to 95.0^ºC.What is the specific heat of the metal?

Correct Answer
verified

Exam 4: Properties of Matter

12.0g of copper combine with iodine to form 36.0g of copper(I) iodide.What is the percent by mass of iodine in copper(I) iodide?

Correct AnswerverifiedShow Answer

What mass of water at 10.0°C is needed to cool 500.0 mL of tea from 25.0°C to 18.3°C? Assume that density and specific heat of the tea are the same as water.

Correct AnswerverifiedShow Answer

Melting and boiling are examples of physical changes.

Correct AnswerverifiedShow Answer

In a physical change new substances are formed.

Correct AnswerverifiedShow Answer

An example of a chemical property is

Correct AnswerverifiedShow Answer

Which is a physical change?

Correct AnswerverifiedShow Answer

Barium iodide contains 35.1% barium by mass.What mass of iodine is contained in 8.50g of barium iodide?

Correct AnswerverifiedShow Answer

How many kiloJoules of energy are released when 1600.g of water cools from 80.0º C to 60.0º C?

Correct AnswerverifiedShow Answer

8.50g of potassium combines with 7.71g of chlorine to form potassium chloride.What is the percent by mass of potassium in potassium chloride?

Correct AnswerverifiedShow Answer

Color,taste,odor,density,and boiling point are all physical properties.

Correct AnswerverifiedShow Answer

Combining hydrogen and oxygen to form water is a

Correct AnswerverifiedShow Answer

A 400.0g metal bar requires 6.446 kJ of energy to change its temperature from 18.0ºC to 95.0ºC.What is the specific heat of the metal?

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

How many kiloJoules of energy are released when 1600.g of water cools from 80.0^º C to 60.0^º C?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A 400.0g metal bar requires 6.446 kJ of energy to change its temperature from 18.0^ºC to 95.0^ºC.What is the specific heat of the metal?

Correct Answer
verified