0
What else can I help you with?
Why is mining coal a physical change?
Mining coal involves extracting it from the ground through processes such as drilling, cutting, and blasting. This is considered a physical change because the coal itself is not altered at a molecular level during the mining process—it is simply being removed from its original location.
How much does a load of coal weigh?
The weight of a load of coal will depend on the amount of coal that you ordered in the load.
How would you describe the physical properties of coal?
Coal is a black, combustible sedimentary rock that is mainly composed of carbon. It is brittle, typically black or brown in color, and has a wide range of heating values depending on the type of coal. Coal can leave a powdery residue when handled and may have a distinct odor when burned.
How many pounds of coal does it take for a Kilowatt?
On average, it takes about 2 pounds of coal to produce 1 kilowatt-hour of electricity in a coal-fired power plant. However, this can vary depending on the efficiency of the plant and the type of coal being used.
Physical properties of coal and snow?
Coal is a black, carbon-rich sedimentary rock that is combustible and used as a fuel source. It is hard, brittle, and has a black or dark brown appearance. Snow is a precipitation in the form of ice crystals that fall from clouds. It is white, soft, and composed of frozen water molecules. Snow is light and can vary in density depending on the temperature and moisture content.
Is breaking coal into pieces chemical or physical change?
Breaking coal into pieces is a physical change because it does not alter the chemical composition of the coal. The coal remains composed of the same elements before and after being broken into pieces.
Is coal harder or softer than rock?
Coal is generally softer than most rocks. It has a lower hardness level compared to most types of rocks.
What is the Name of the physical property you would used to tell the difference between coal and snow?
color
What medicine contains coal?
There are few medicines which contains coal without any justification. Coal is given in much larger quantity in various poisoning. So that it should adsorb various poisons by it's physical property.
Is coal stronger than diamond?
No, coal is not stronger than diamond. Diamond is one of the hardest known natural materials, while coal is much softer and less durable.
Why is mining coal a physical change?
Mining coal involves extracting it from the ground through processes such as drilling, cutting, and blasting. This is considered a physical change because the coal itself is not altered at a molecular level during the mining process—it is simply being removed from its original location.
Is mining coal a physical or chemical change?
Mining coal is a physical change because the act of extracting coal from the earth does not alter its chemical composition. The coal remains chemically the same before and after the mining process.
What is the softest type of coal?
In order of soft to hard ; Peat, Lignite Coal Anthracene.
What is harder lignite or anthracite coal?
Anthracite coal is harder than lignite coal. Anthracite has a higher carbon content and is more dense and brittle compared to lignite, which is softer and more crumbly.
What is the youngest and softest type of coal?
The youngest and softest type of coal is lignite. It has a low carbon content and a high moisture content, making it less dense and softer compared to other types of coal.
Is coal dust chemical or a physical toxicant?
Coal dust is considered a physical toxicant because it can cause harm through its physical properties, such as being inhaled and causing respiratory issues or skin irritation. Chemical toxicants, on the other hand, refer to substances that cause harm due to their chemical properties or composition.
Is Burning coal physical or chemical change?
Burning coal is a chemical change because it involves a chemical reaction where the coal combines with oxygen to produce new substances like carbon dioxide, heat, and ash. This process results in the formation of different molecules with different properties from the original coal.
