Crystal methamphetamine fits the description of a white glass crystal powder that does not dissolve in water.
Crystal powder is a fine, crystalline substance that can be used in various applications such as in cosmetics, pharmaceuticals, or as a food additive. It can be produced by grinding crystals into a powder form to enhance their solubility or ease of use.
When a crystal gives off water vapor and turns into a powder upon heating, it typically indicates that the crystal is a hydrated salt (contains water molecules within its structure). The heating drives off the water molecules, leading to the breakdown of the crystal structure and formation of a powder.
Baking soda is a powder. When dissolved in water, it forms a clear liquid with no crystals present.
NaOH is a white crystal/powder.
It really depends on the powder. If it's white and chunky (may not be) and has a numbing effect on the tongue, it's cocaine. If it's in crystal form, or powder with smaller crystals in it, it might be methamphetamine. Brown or tan powder is heroin. Also street drug test kits are available online, that turn a certain color depending on the drug.
The powder method is used to determine the value of the lattice parameters accurately. Lattice parameters are the magnitudes of the unit vectors a, b and c which define the unit cell for the crystal.
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A pure crystal of sodium chloride is transparent.
Methamphetamine usually comes in the form of a crystalline white powder that is odorless; if it is in crystal form & smoked, however, there is an odor.
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If you are talking about the brand of drink, Crystal Light is a solid (as a powder), and a liquid (when it is dissolved into water to make the drink). If you are talking about light reflecting from a crystal, light is energy, not matter.