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What is a mineral that contains oxygen and carbon softer than fluorite but harder than gypsum and effervesces when it contacts an acid?
Calcite (CaCO3).
What minerals would scratch fluorite - talc quartz or calcite?
Fluorite with a Mohs hardness of 4 would be scratched by quartz (with a hardness of 7). Both calcite (Mohs hardness 3) and talc (Mohs hardness 1) are softer than fluorite.
Why is it easier to start a car engine on a hot day than cold day?
Fuel is much easier to ignite when it's closer to its ignition temperature (warmer days) than it is when it's colder.
What are some properties of gypsum?
-Softer than the human finger nail or A solid 2 on the Mineral Hardness Chart -White Streaking -Color is Mostly clear or translucent( not transparent all the time)
Why do some elemental bonds work easier than others?
Elements are looking to find the magic number which is 8. when an atom has 8 electrons it is the most stable. Bonds that will have a total of 8 electrons work easier than bonds that will have 3 or 4.
If Calcite will scratch gypsum This is an example of what physical characteristics?
This is an example of hardness, which is a physical characteristic that describes the resistance of a mineral to being scratched. Hardness is determined by the ability of one mineral to scratch another.
What minerals can gymsum scratch?
Gypsum, which has a Mohs hardness of 2, can scratch minerals that are softer than itself, such as talc (hardness 1) and calcite (hardness 3). Therefore, it can scratch talc but not calcite or any harder mineral. Other minerals that gypsum can scratch include some varieties of gypsum itself, like selenite.
Calcite is harder than what what 2 minerals?
Calcite is harder than both gypsum and talc. On the Mohs scale of mineral hardness, calcite has a hardness of 3, while gypsum has a hardness of 2 and talc has a hardness of 1. This means that calcite can scratch both gypsum and talc, demonstrating its greater hardness.
Which mineral would a penny scratch?
A penny would scratch minerals with a lower hardness rating such as calcite, gypsum, or talc. Minerals like quartz or topaz would not be scratched by a penny because they are harder than the metal in a penny.
Does graphite scratch gypsum?
Yes, graphite is harder than gypsum, so it can scratch gypsum.
What mineral is harder than gypsum but softer than flourite?
Calcite is a mineral that is harder than gypsum but softer than fluorite on the Mohs scale of mineral hardness. Calcite has a hardness of 3, while gypsum has a hardness of 2 and fluorite has a hardness of 4.
What minerals can a steel knife scratch?
A steel knife can scratch minerals with a hardness lower than that of steel, such as gypsum, calcite, fluorite, and talc. Minerals like quartz, topaz, and corundum are harder than steel and cannot be easily scratched by a steel knife.
Which material would scratch the other quartz or calcite?
Quartz, with a hardness of 7, will scratch calcite, with a hardness of 3.
Which minerals will not scratch quartz?
Quartz has a Mohs hardness of 7, meaning minerals that are softer than quartz (Mohs < 7) will not be able to scratch it. Some examples include talc (Mohs 1), gypsum (Mohs 2), calcite (Mohs 3), and fluorite (Mohs 4).
What type of mineral is colorless cannot be scratched by calcite has no shine and breaks apart in many ways?
The mineral you're describing is likely gypsum. Gypsum is colorless, has a hardness less than calcite (can't scratch it), has a dull or pearly luster (no shine), and typically breaks apart into small grains or fine powder.
What is the hardness of a mineral that scratches gypsum?
The mineral that scratches gypsum has a hardness greater than 2 on the Mohs scale. Gypsum has a hardness of 2 on the Mohs scale, so any mineral that can scratch it must have a hardness greater than 2.
Which mineral would halite be able to scratch?
Halite, which has a Mohs hardness of 2.5, can scratch minerals that are softer than it on the hardness scale. This means it can scratch talc (hardness 1) and gypsum (hardness 2). However, it would not be able to scratch minerals like calcite (hardness 3) or any harder minerals.
