Pure substances have identical particles. This means that all samples of a pure substance will have the same type and arrangement of particles, whether they are atoms, molecules, or ions. Examples of pure substances include elements and compounds.
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Particle theory explains that all matter is made up of tiny particles. In the case of pure substances, these particles are the same throughout the substance, giving it a uniform composition. This understanding helps in identifying and describing the properties of pure substances based on the behavior of their particles.
Yes, a pure substance is a substance that is made up of only one type of particle. This means that all particles in a pure substance are identical in terms of their chemical composition.
Tap water in a glass is a mixture. It contains various substances such as water molecules, minerals, and possibly other impurities depending on the source.
Table salt is a pure substance because it is composed of only one type of molecule, sodium chloride. Seawater is a mixture of different substances, including salt, water, and various dissolved ions. Sand is a heterogeneous mixture of minerals and particles, making it not a pure substance.
Yes, a cube of sugar is a pure substance because it is made up of only one type of molecule - sucrose. This means that all of the particles in the cube are identical.