Question

base your answer to the following question on the diagram below, which shows the results of three different physical tests, a, b, and c, that were performed on a mineral. test a: struck with a hammer, separate pieces with cleavage at two different angles. test b: rubbed on an unglazed porcelain plate, greenish black powder. test c: rubbed on a glass square, scratch in glass. the luster of this mineral could be determined by a) using an electronic balance b) using a graduated cylinder c) observing how light reflects from the surface of the mineral d) observing what happens when acid is placed on the mineral. base your answers to questions 9 and 10 on the mineral chart below and on your knowledge of earth science. the mineral chart lists some properties of five minerals that are the major sources of the same metallic element that is used by many industries.

Explanation:

Luster is the way a mineral reflects light. To determine a mineral's luster, one observes how light reflects from its surface. An electronic balance measures mass, a graduated - cylinder measures volume, and observing the reaction with acid tests for the presence of carbonate or other reactive components in a mineral.

Answer:

C. observing how light reflects from the surface of the mineral