Question : 31.              Which of the following statements regarding the gaseous state : 1335375

 

 

31.              Which of the following statements regarding the gaseous state of matter is incorrect?

A)The symbol for a gas is (g).

B)Gases consist of particles that are in constant random motion.

C)Gases can be compressed to smaller volumes.

D)It is possible for gases to mix together.

E)The particles in a gas are relatively close to one another.

 

32.              A characteristic of a substance that involves the transformations the substance can undergo to produce a different substance is:

A)a physical property.D)a material property.

B)a chemical property.E)a characteristic property.

C)a physical change.

 

33.              Which of the following statements is incorrect?

A)The condensation of steam on a mirror is an example of a physical change.

B)The burning of a piece of charcoal to a white powder is an example of a physical change.

C)Evaporation of water from a fish tank is evidence of a physical change.

D)The fact that sulfur is a yellow powder is a physical property.

E)The fact that copper conducts electricity is a physical property.

 

34.              Which of the following statements is incorrect?

A)The burning of propane in a barbecue grill is a physical change.

B)The cooking of the meat on a barbecue grill is a chemical change.

C)Cleaning the grill afterwards using a steel brush is a physical change.

D)Further cleaning of the grill using a detergent is a chemical change.

E)Digestion of the meat by your body involves both physical and chemical changes.

 

35.              Consider the following transformation.  Which of the statements best describes the process?

A)A chemical change occurs in which atoms rearrange to form a new compound.

B)A chemical change occurs in which an ionic compound is formed from diatomic elements.

C)A chemical change occurs in which no atoms rearrange to form a new substance.

D)A physical change occurs in which no atoms rearrange to form a new substance.

E)A physical change occurs in which atoms rearrange to form a new compound.

 

36.              Consider the following transformation.  Which of the statements best describes the process?

A)A physical change occurs in which no atoms rearrange.

B)A physical change occurs in which atoms rearrange to form a new compound.

C)A chemical change occurs in which no atoms rearrange.

D)A chemical change occurs in which atoms rearrange to form a new compound.

E)A chemical change occurs in which an ionic compound is formed from diatomic elements.

 

37.              A 1-ounce serving of Cheetos has 2.90?102 mg of sodium.  What is this mass in units of grams?

A)  290,000 g    B)  0.290 g    C)  0.00345 g    D)  3.45 g    E)  29.0 g

 

38.              A brownie contains 1.30?102 mg of sodium.  What is this mass in units of grams?

A)  130,000 g    B)  0.130 g    C)  13.0 g    D)  7.69 g    E)  0.00769 g

 

39.              A 1-ounce serving of a breakfast cereal contains 1.60?102 mg of potassium.  What is this mass in units of grams?

A)  0.160 g    B)  160,000 g    C)  6.25 g    D)  0.00625 g    E)  16.0 g

 

40.              How many pounds of Spaghettios are in a can that contains 418 g?  (1 lb = 453.6 g)

A)0.0576 lbD)1.90 ? 105 lb

B)1.19 ? 104 lbE)3.60 ? 10-2 lb

C)0.922 lb

 

 

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