Question 1

Which of the following statements concerning water (H2O) is/are CORRECT?
1) H2O is a chemical compound.
2) Water is a homogeneous mixture.
3) Liquid water is a mixture of elemental hydrogen and oxygen.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3

Question 2

Which one of the following is most likely to be a $\underline{\text{homogeneous mixture}}$?

Accepted Answer

A)  campfire smoke 
B)  blood 
C)  filtered air 
D)  soil 
E)  plain yogurt

Question 3

Which one of the following statements is $\underline{\text{ correct? }}$

Accepted Answer

A)  A pure substance may be separated by filtration or distillation into two or more components. 
B)  A heterogeneous mixture is also known as a solution. 
C)  A heterogeneous mixture is composed of two or more substances in the same phase. 
D)  The composition is uniform throughout a homogeneous mixture. 
E)  The combination of a liquid and a solid always results in a heterogeneous mixture.

Question 4

The ________ of a substance is defined as its mass per unit volume.

Accepted Answer

The answer of The ________ of a substance is defined...

Question 5

Which of the following statements concerning the kinetic-molecular theory of matter is/are CORRECT?
1)Particles in a gas move faster as the temperature increases.
2)Particles in a liquid are packed closely together,but are not confined to specific positions.
3)Particles in a gas vibrate back and forth about an average position.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  1 and 2 
E)  1,2,and 3

Question 6

Which of the following statements is/are CORRECT?
1)The conduction of electricity through copper wire is a chemical change.
2)The rusting of iron is a chemical change.
3)The evaporation of ammonia at -33.3$^{\circ}$C is a chemical change.

Accepted Answer

A)  1 only 
B)  2 only 
C)  3 only 
D)  2 and 3 
E)  1,2,and 3

Question 7

What is the symbol for the element $\underline{\text{  potassium?}}$

Accepted Answer

A)  K 
B)  Po 
C)  Pt 
D)  Kr 
E)  P

Question 8

Many regulators,environmentalists,and citizens around the world believe that ________ development is required to meet today's economic and environmental needs while preserving the options for future generations to meet theirs.

Accepted Answer

The answer of Many regulators,environmentalists,and citizens around the world believe...

Question 9

Use the pictures below

Accepted Answer

A)   
B)   
C)   
D)   
E)  
-Which of the above figure represents a $\underline{\text{mixture of two elements}}$? 
A)  Figure A 
B)  Figure B 
C)  Figure C 
D)  Figure D 
E)  Figure E

Question 10

All of the following are examples of intensive properties of matter EXCEPT _______.

Accepted Answer

A)  ductility 
B)  melting point 
C)  thermal conductivity 
D)  weight 
E)  malleability

Question 11

Properties,such as color and density,which can be observed or measured without changing the composition of a substance are called ________ properties.

Accepted Answer

The answer of Properties,such as color and density,which can be...

Question 12

Which one of the following substances is classified as a chemical compound?

Accepted Answer

A)  Mo 
B)  Cr 
C)  Cd 
D)  CO 
E)  No

Question 13

Which one of the following substances is classified as an element?

Accepted Answer

A)  I2 
B)  NO 
C)  KCl 
D)  C6H12O6 
E)  CO

Exam 1: Basic Concepts of Chemistry

Which of the following statements concerning water (H₂O) is/are CORRECT? 1) H₂O is a chemical compound. 2) Water is a homogeneous mixture. 3) Liquid water is a mixture of elemental hydrogen and oxygen.

Which one of the following is most likely to be a $\underline{\text{homogeneous mixture}}$ ?

Which one of the following statements is $\underline{\text{ correct? }}$

The ________ of a substance is defined as its mass per unit volume.

Which of the following statements is/are CORRECT? 1) The conduction of electricity through copper wire is a chemical change. 2) The rusting of iron is a chemical change. 3) The evaporation of ammonia at -33.3 $^{\circ}$ C is a chemical change.

What is the symbol for the element $\underline{\text{ potassium?}}$

Many regulators,environmentalists,and citizens around the world believe that ________ development is required to meet today's economic and environmental needs while preserving the options for future generations to meet theirs.

All of the following are examples of intensive properties of matter EXCEPT _______.

Properties,such as color and density,which can be observed or measured without changing the composition of a substance are called ________ properties.

Which one of the following substances is classified as a chemical compound?

Which one of the following substances is classified as an element?

Exam 1: Basic Concepts of Chemistry

Which of the following statements concerning water (H2O) is/are CORRECT? 1) H2O is a chemical compound. 2) Water is a homogeneous mixture. 3) Liquid water is a mixture of elemental hydrogen and oxygen.

Which one of the following is most likely to be a homogeneous mixture‾\underline{\text{homogeneous mixture}}homogeneous mixture​ ?

Which one of the following statements is correct? ‾\underline{\text{ correct? }} correct? ​

The ________ of a substance is defined as its mass per unit volume.

Which of the following statements is/are CORRECT? 1) The conduction of electricity through copper wire is a chemical change. 2) The rusting of iron is a chemical change. 3) The evaporation of ammonia at -33.3 ∘^{\circ}∘ C is a chemical change.

What is the symbol for the element potassium?‾\underline{\text{ potassium?}} potassium?​

Many regulators,environmentalists,and citizens around the world believe that ________ development is required to meet today's economic and environmental needs while preserving the options for future generations to meet theirs.

Use the pictures below A) B) C) D) E) -Which of the above figure represents a mixture of two elements‾\underline{\text{mixture of two elements}}mixture of two elements​ ?

All of the following are examples of intensive properties of matter EXCEPT _______.

Properties,such as color and density,which can be observed or measured without changing the composition of a substance are called ________ properties.

Which one of the following substances is classified as a chemical compound?

Which one of the following substances is classified as an element?

Which of the following statements concerning water (H₂O) is/are CORRECT? 1) H₂O is a chemical compound. 2) Water is a homogeneous mixture. 3) Liquid water is a mixture of elemental hydrogen and oxygen.

Which one of the following is most likely to be a $\underline{\text{homogeneous mixture}}$ ?

Which one of the following statements is $\underline{\text{ correct? }}$

Which of the following statements is/are CORRECT? 1) The conduction of electricity through copper wire is a chemical change. 2) The rusting of iron is a chemical change. 3) The evaporation of ammonia at -33.3 $^{\circ}$ C is a chemical change.

What is the symbol for the element $\underline{\text{ potassium?}}$