Elements, Compounds, & Mixtures Quiz

 

Answer each question by clicking the correct blue button. Only the first answer selected is graded.

1. Which of the following represents a compound?
A. H-H.
B. H-O-H.
C. Neither A nor B.
D. Both A and B. 

 

 

2. Which of the following represents an element?
A. H-H.

B. H-O-H.

C. Neither A nor B.

D. Both A and B.

 

 

3. In a certain material that is used to remove water from other materials, two atoms of phosphorus are always present for every five atoms of oxygen. The elements can only be separated by chemical means. What type of matter is the material?
A. Compound.
B. Element.

C. Neither A nor B.

D. Both A and B.

 

 

4.  Carbon contains only atoms of carbon and cannot be broken down. Carbon is an
example of a(n):
A. Compound.
B. Element.

C. Neither A nor B.

D. Both A and B.

 

 

5.  Mixtures can be heterogeneous or homogeneous. Which of the following is the
characteristic of a homogeneous mixture?
A. A mixture in which two or more substances are still distinguishable.
B. A mixture in which large particles are suspended.

C. A mixture in which large particles are not suspended and settle.

D. A mixture in which two or more substances are evenly distributed.

 

 

6  Which of the following statements is NOT true regarding a bowl of vegetable soup?
A. It is a heterogeneous mixture.
B. The broth contains a homogeneous mixture of salt and water.

C. The broth contains all the compounds present in the soup.

D. The compounds in the soup are made up of elements.

 

7.  What type of matter is a ring that is 14-karat gold? (Pure gold is 24 karat.)
A. Compound.
B. Element.

C. Heterogeneous mixture.

D. Homogeneous mixture.

 8.  A sedimentary rock that is placed under increasing temperature and pressure, changes form while remaining solid. Such a change is called metamorphism, and metamorphic rock results. One type of metamorphic rock is called a foliated metamorphic rock, and it contains wavy layers and bands of minerals. A foliated metamorphic rock is an example of what type of matter?
A. Element.
B. Compound.

C. Heterogeneous mixture.

D. Homogeneous mixture.

  

Grade exam.