Question 1

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

Accepted Answer

A) A 
B) B 
C) C 
D) D

Question 2

A preliminary explanation of the results of many experiments that can be used to make predictions and suggest further experimentations is a ________.

Accepted Answer

The answer of A preliminary explanation of the results of...

Question 3

Which element indicated by letter in the following periodic table is a gas at room temperature and a pressure of 1.0 atm?

Accepted Answer

A) A 
B) B 
C) C 
D) D

Question 4

The diameter of an atom is approximately 1 × 10-10 m.What is the diameter in millimeters?

Accepted Answer

A) 1 × 10- 16 mm 
B) 1 × 10- 13 mm 
C) 1 × 10-7 mm 
D) 1 × 10-4 mm

Question 5

What is the chemical symbol for manganese?

Accepted Answer

A) Hg 
B) Mg 
C) Mn 
D) Na

Question 6

Combustion of hydrogen releases 142 kJ per gram of hydrogen reacted.How many kilocalories of energy are released by the combustion of 16.0 ounces of hydrogen?

Accepted Answer

A) 1)31 kcal 
B) 19.2 kcal 
C) 1)54 × 104 kcal 
D) 2)69 × 105 kcal

Question 7

The factor 10-2 corresponds to which prefix?

Accepted Answer

A) deka 
B) deci 
C) centi 
D) milli

Question 8

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Accepted Answer

A) 1)15 × 10- 8 mm 
B) 1)15 × 10- 7 mm 
C) 1)15 × 1013 mm 
D) 1)15 × 1017 mm

Question 9

Calculate the kinetic energy of a 150-g baseball moving at a speed of 40.m/s (89 mph).

Accepted Answer

A) 6)0 J 
B) 1)2 × 102 J 
C) 6)0 × 103 J 
D) 1)2 × 105 J

Question 10

The nighttime and daytime temperatures on Mercury are 13 K and 683 K respectively.The melting point and boiling point of sulfur is 246°F and 832°F.Which of the following statements is true? On Mercury sulfur exists

Accepted Answer

A) only in the liquid state. 
B) only in the solid state. 
C) as both a liquid and a gas. 
D) as both a liquid and a solid.

Question 11

What is the chemical symbol for copper?

Accepted Answer

A) Co 
B) Cr 
C) Cu 
D) C

Question 12

The number of cm in 1.0 in is closest to ________.

Accepted Answer

A) 1)0 
B) 1)5 
C) 2)0 
D) 2)5

Question 13

The fundamental SI unit of mass is the

Accepted Answer

A) centigram. 
B) gram. 
C) kilogram. 
D) milligram.

Question 14

Which element indicated by letter in the following periodic table is the best conductor of electricity and heat?

Accepted Answer

A) A 
B) B 
C) C 
D) D

Question 15

Which horizontal row of the periodic table contains the most elements?

Accepted Answer

A) row 4 
B) row 5 
C) row 6 
D) They all contain the same number of elements.

Question 16

The LD50 values for several chemicals are listed below.These chemicals were tested on laboratory mice.Which was the least toxic to the mice in small amounts?

Accepted Answer

A) aspirin 1.5 g/kg 
B) chloroform,3.2 g/kg 
C) ethyl alcohol,10.6 g/kg 
D) sodium cyclamate,17 g/kg

Question 17

Use the drawings below to answer the following questions. 
-If hitting the bull's-eye is the desired result,Figure (c)represents

Accepted Answer

A) good accuracy and good precision. 
B) good accuracy and poor precision. 
C) poor accuracy and good precision. 
D) poor accuracy and poor precision.

Question 18

The LD50 values for several chemicals are listed below.These chemicals were tested on laboratory mice.Which was the most toxic to the mice in small amounts?

Accepted Answer

A) aspirin 1.5 g/kg 
B) chloroform,3.2 g/kg 
C) ethyl alcohol,10.6 g/kg 
D) sodium cyclamate,17 g/kg

Question 19

One kilogram is slightly more than ________ U.S.pounds?

Accepted Answer

A) 0)5 
B) 1 
C) 2 
D) 5

Question 20

A piece of metal ore weighs 8.25 g.When a student places it into a graduated cylinder containing water,the liquid level rises from 21.25 mL to 26.47 mL.What is the density of the ore?

Accepted Answer

A) 0)3 12 g/mL 
B) 0)633 g/mL 
C) 1)58 g/mL 
D) 3)21 g/mL

Exam 1: Chemistry: Matter and Measurement

Which element indicated by letter in the following periodic table reacts rapidly with water to form an alkaline solution?

A preliminary explanation of the results of many experiments that can be used to make predictions and suggest further experimentations is a ________.

Which element indicated by letter in the following periodic table is a gas at room temperature and a pressure of 1.0 atm?

The diameter of an atom is approximately 1 × 10^-10 m.What is the diameter in millimeters?

What is the chemical symbol for manganese?

Combustion of hydrogen releases 142 kJ per gram of hydrogen reacted.How many kilocalories of energy are released by the combustion of 16.0 ounces of hydrogen?

The factor 10^-2 corresponds to which prefix?

The average distance between nitrogen and oxygen atoms is 115 pm in a compound called nitric oxide.What is this distance in millimeters?

Calculate the kinetic energy of a 150-g baseball moving at a speed of 40.m/s (89 mph) .

The nighttime and daytime temperatures on Mercury are 13 K and 683 K respectively.The melting point and boiling point of sulfur is 246°F and 832°F.Which of the following statements is true? On Mercury sulfur exists

What is the chemical symbol for copper?

The number of cm in 1.0 in is closest to ________.

The fundamental SI unit of mass is the

Which element indicated by letter in the following periodic table is the best conductor of electricity and heat?

Which horizontal row of the periodic table contains the most elements?

The LD₅₀ values for several chemicals are listed below.These chemicals were tested on laboratory mice.Which was the least toxic to the mice in small amounts?

Use the drawings below to answer the following questions. -If hitting the bull's-eye is the desired result,Figure (c) represents

The LD₅₀ values for several chemicals are listed below.These chemicals were tested on laboratory mice.Which was the most toxic to the mice in small amounts?

One kilogram is slightly more than ________ U.S.pounds?

A piece of metal ore weighs 8.25 g.When a student places it into a graduated cylinder containing water,the liquid level rises from 21.25 mL to 26.47 mL.What is the density of the ore?