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What is bulk powder?
A mass of fine loose grains that are made when a solid material has been ground or crushed.
What is dust smoke or chemical fumes?
- Dust is a fine powdered solid in the atmosphere (a suspension)- Smoke is a mixture of materials (solid, liquid, gases) evolved during burning.- Chemical fume is composed from substances (solid, liquid, gases) evolved during chemical reactions.
Is dust colloid?
Yes - dust is considered a colloid. A colloid is a substance microscopically dispersed evenly throughout another substance. Dust is an aerosol - it is a colloid suspension of fine solid particles in gas.
What is dust smoke or chemical?
- Dust is a fine powdered solid in the atmosphere (a suspension)- Smoke is a mixture of materials (solid, liquid, gases) evolved during burning.- Chemical fume is composed from substances (solid, liquid, gases) evolved during chemical reactions.
Is dusk a solid?
The word "dusk" is a period of twilight after sunset. The substance "dust" is a solid, but consists of fine grains that can move in a fluid manner or be suspended in the air.
Do bugs turn to dust when crushed?
When bugs are crushed, they do not turn to dust in the literal sense, but their bodies can break apart into small pieces or fragments. Insects have exoskeletons made of chitin, which can shatter or become pulverized under pressure. This can create a fine residue that might resemble dust, but it's primarily bits of the insect's exoskeleton and internal contents. So, while they don't turn to dust completely, they can break down into smaller components.
Why can grinding a solid into a fine powder increase the rate of reaction?
Grinding a solid into a fine powder increases the rate of reaction by increasing its surface area. A larger surface area allows more collisions between reactant particles, which enhances the likelihood of successful interactions and reactions. Additionally, the smaller particle size can improve the dispersion of the solid in a mixture, further facilitating contact with other reactants. This leads to a faster overall reaction rate.
What is covers the surface of the moon?
The material that covers the surface of the moon is called regolith, which is also called moon dust. Regolith is made up of the crushed fine powder of volcanic glass and rock fragments.
What is dust and soot?
Dust is very fine particles of soil or ash and soot is very fine particles of carbon.
Can a new substance be created during a reaction from two solid substances?
Yes, many chemical reactions produce a new solid substance from two solid reactants. These reactions are slow, and the solids must be ground up very fine and pressed together tightly for a reaction to occur at any significant rate (see Related Questions about what affect the rate of a chemical reaction).
What is lime dust?
Lime dust is a fine powder that is produced by grinding or pulverizing limestone rocks. It is commonly used in construction, agriculture, and industrial applications due to its alkaline properties and ability to neutralize acidic compounds. Lime dust can be hazardous if inhaled, so precautions should be taken when handling it.
How much crushed rock covers 30 sq. ft.?
The answer will depend on how fine the rock is crushed and the depth to which the area needs to be covered.
