1.Write true or false. If the statement is false, tell why.
A. Rocks can break down into sediments.
B. Rocks can change from sedimentary to metamorphic.
C. Coal is an example of an igneous rock.
D. New rocks form over time.
E. Marble is a sedimentary rock.
F. Kimberlite is an igneous rock.
G. All rocks are made of minerals.
H. Rocks and minerals are the same.
I. All minerals are made of rocks.
J. A mineral with a hardness of 6 will scratch a mineral with a hardness of more than 6.
2. What is the hardest known mineral?