Question

These two properties of a mineral must be tested in order to be observed. One uses a nail and another uses a special plate.

Answer 1

Answer:

Streak is a more accurate illustration of the mineral's color, streak is a more reliable property of minerals than color for identification. ... Another uses a special plate, the physical property of streak can be considered.

Answer 2

"Nail - Hardness and luster test,

Special plate - Streak and cleavage test"

Explanation:

The properties of minerals are,

• Hardness is one of the most useful property for identifying minerals.
• Luster test is easy way to find the property of mineral.
• Color is obvious property of mineral.
• Streak is a more reliable property of mineral.
• cleavage is mainly observed property of mineral.

Here,

Hardness and Luster tested are obviously suitable for nail.Because normally nails are made of steel. Steel should have hardness and thickness.nails are commonly used to fix any material to stand at long time and it has luster quality test,nails made by steel should be reflects the light.

Streak and cleavage tested are suitable for special plate. Because uses of special plat physical property of streak can be considered.cleavage means breaks along smooth flat planes and breaks occurs along planes of weakness in the mineral's structure.