Define the following:-
1) Solution
2)suspension
3)colloid
4)Metalloid
5)Tyndall effect
6)Brownies movement
Class 9 sci(chemistry) ch 2 ans plzz
Answers
Answer:
Explanation:
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1)A solution is a homogeneous type of mixture of two or more substances. A solution has two parts: a solute and a solvent. The solute is the substance that dissolves, and the solvent is the majority of the solution. ... Solutions can exist in different phases - solid, liquid, and gas.
2)A suspension is a heterogenous mixture containing large particles that will settle on standing. Sand in water is an example of a suspension. A solution is a homogenous mixture of two or more substances where one substance has dissolved the other.
3)A colloid is a substance microscopically dispersed evenly throughout another substance. The dispersed-phase particles have a diameter between about 5 and 200 nanometers. Examples: Milk is an emulsion, which is a colloid in which both parties are liquids.
4)A metalloid is a chemical element that exhibits some properties of metals and some of nonmetals.
Definition for metalloids: elements with properties intermediate between metals and nonmetals. Boron, silicon, germanium, arsenic, antimony, tellurium, and polonium are metalloids.
5)The Tyndall effect is the scattering of light as a light beam passes through a colloid. The individual suspension particles scatter and reflect light, making the beam visible.
6)Brownian motion is the continuous random movement of small particles suspended in a fluid, which arise from collisions with the fluid molecules. First observed by the British botanist R. Brown (1773-1858) when studying pollen particles. The effect is also visible in particles of smoke suspended in a gas.
Answer:
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Explanation:
a solution is a special type of homogeneous mixture composed of two or more substances. In such a mixture, a solute is a substance dissolved in another substance, known as a solvent.
A suspension is a heterogenous mixture containing large particles that will settle on standing. Sand in water is an example of a suspension. A solution is a homogenous mixture of two or more substances where one substance has dissolved the other.
colloid
A mixture in which very small particles of one substance are distributed evenly throughout another substance. The particles are generally larger than those in a solution, and smaller than those in a suspension.
an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid non-metals or semiconductors.
The Tyndall effect is the phenomenon in which the particles in a colloid scatter the beams of light that are directed at them.
the erratic random movement of microscopic particles in a fluid, as a result of continuous bombardment from molecules of the surrounding medium.