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What mineral can be scratched by a penny?
The mineral that can be scratched by a penny is talc. Talc is the softest mineral on the Mohs scale, with a hardness of 1. A penny has a hardness of around 3.5 on the Mohs scale.
Can calcite be scratched by a penny?
No, calcite is harder than a penny and cannot be scratched by it. Calcite has a Mohs hardness of 3, while a penny typically has a hardness of around 3.5 on the Mohs scale.
Which mineral can be scratched by glass but not a penny?
The mineral that can be scratched by glass but not a penny is calcite. Calcite has a hardness of 3 on the Mohs scale, which is lower than the hardness of glass (5.5) but higher than that of a penny (2.5).
What is the hardness of a mineral if it scratches a penny but will not scratch glass?
Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
What mineral can be scratched by a penny but not a fingernail?
Copper sulfide minerals, such as chalcocite and bornite, can be scratched by a penny but not a fingernail. This is due to the Mohs hardness scale, where these minerals have a hardness greater than a penny (3.5) but less than a fingernail (2.5).
Describe how to distinguish between a mineral with a hardness of 6 and one with a hardness of 4 using only a glass plate and a copper penny?
To distinguish between a mineral with a hardness of 6 and one with a hardness of 4, you can use the glass plate and the copper penny for comparison. First, scratch the mineral against the glass plate; if it scratches the glass, it has a hardness greater than 5. Then, use the copper penny to scratch the mineral; if the mineral scratches the penny, it has a hardness greater than 3. If it scratches the glass but not the penny, it has a hardness of 6; if it scratches the penny but not the glass, it has a hardness of 4.
What mineral can be scratched by a penny?
The mineral that can be scratched by a penny is talc. Talc is the softest mineral on the Mohs scale, with a hardness of 1. A penny has a hardness of around 3.5 on the Mohs scale.
Can calcite be scratched by a penny?
No, calcite is harder than a penny and cannot be scratched by it. Calcite has a Mohs hardness of 3, while a penny typically has a hardness of around 3.5 on the Mohs scale.
How big are penny skateboard wheels?
Penny wheels are 59mm in diameter. Hardness is 78a.
Which mineral can be scratched by glass but not a penny?
The mineral that can be scratched by glass but not a penny is calcite. Calcite has a hardness of 3 on the Mohs scale, which is lower than the hardness of glass (5.5) but higher than that of a penny (2.5).
What is the hardness of a mineral if it scratches a penny but will not scratch glass?
Between 3.5 and 5.5 on the Mohs scale of mineral hardness.
What mineral that you can't scratch with your fingernail but a copper penny will?
The mineral that you can't scratch with your fingernail but can be scratched by a copper penny is calcite. Calcite has a hardness of about 3 on the Mohs scale, while fingernails have a hardness of around 2.5. A copper penny, which has a hardness of approximately 3.5, can easily scratch calcite.
Penny was holding a penny in her hand and a dymond in the other one she tries to scratch the dymond with the penny what is she testing?
Hardness of the dimond
Which would be the hardness of a mineral that can be scratched by a penny but not a fingernail?
A mineral that can be scratched by a penny (which has a hardness of about 3.5 on the Mohs scale) but not by a fingernail (which has a hardness of about 2.5 to 3) would have a hardness between 3 and 3.5. This means the mineral's hardness is likely around 3.2 to 3.4, indicating it is softer than the penny but harder than a fingernail. Examples of minerals that fit this description could include calcite or gypsum, depending on their specific characteristics.
Can quartz be scratched by a penny?
No. According to Mohs Hardness Scale, Quartz has a hardness of 7 while copper has a hardness of about 3. The higher number indicates a greater hardness.
What is a penny on Mohs hardness scale?
A penny has a Mohs hardness of around 3.5. This means that it can be scratched by harder materials like glass or quartz, but it can scratch softer materials such as chalk or talc.
What mineral can be scratched by a penny but not a fingernail?
Copper sulfide minerals, such as chalcocite and bornite, can be scratched by a penny but not a fingernail. This is due to the Mohs hardness scale, where these minerals have a hardness greater than a penny (3.5) but less than a fingernail (2.5).
