A student wanted to conduct a series of tests to identify different minerals.
Which list below shows the properties that the student should test for on each of the different minerals?
hardness, color, luster, and streak
hardness, color, luster, and streak
color, taste, shape, and size
color, taste, shape, and size
taste, hardness, color, and size
taste, hardness, color, and size
streak, size, taste, and shape
streak, size, taste, and shape
The correct answer is: hardness, color, luster, and streak
The correct list of properties that a student should test for to identify different minerals is hardness, color, luster, and streak.
Here's an explanation of each property:
1. Hardness: This refers to the mineral's resistance to scratching. The student can use a mineral hardness scale called the Mohs scale to compare the hardness of different minerals.
2. Color: This is the color of a mineral when observed with the naked eye. While color can be helpful, it is not always a reliable indicator of a mineral's identity since some minerals can occur in different colors.
3. Luster: This refers to how the mineral reflects light. Luster can be described as metallic, glassy, pearly, silky, or dull. By observing the luster, the student can narrow down the potential minerals.
4. Streak: This is the color of the powdered form of a mineral. To determine the streak, the student can rub the mineral against a porcelain streak plate. The color of the streak can be different from the color of the mineral and can provide important clues about its identity.
Therefore, the correct answer is "hardness, color, luster, and streak."
Why doubles?
hardness, color, luster, and streak