What is tyndall effect? kinds of solution show it?
differentiate between homogeneous and heterogeneous mix
what is centrifugation? where it is used?
what is a suspension? what are the properties of suspensio
differentiate between mixtures and compound by giving a
write a method to separate a mixture of salt and ammoniu
what is crystallization? where is it used? why is th
Ans. Tynadall effect is scatter beam light passing through the full of water glass
2 . homogeneous = it has uniform composition , no visible boundaries show , they are consist of only one phases . 3 . heterogeneous = it has does not have uniform composition , show visible boundaries
.heterogeneous mixtures are not uniform in appearance and composition.
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(a) speed is a scalar quantity. Time rate of distance is called speed.speed= distance / time. unit m/s dimensional formula LT^-1
velocity is a vector quantity.time rateof displacement is called velocity.velocity =displacement / time interval.unit m/s. dimensional formula LT^-1
(b)displacement is the straight line distance between initial and final point it is a vector quantity itcan be +ve, -ve, or0
(d) because liquid molecules have lesser space between molecule and the force of attraction is less due to the loosely packing that's why liquids have lower density than solids
A homogeneous mixture is a solid, liquid or gaseous mixture that has the same proportions of its components throughout any given sample. Conversely, a heterogeneous mixture has components in which proportions vary throughout the sample.
a) milk hydrogen
b)elements- hydrogen,silicon;compounds-methane,acetic acid;mixtures-air
c)The difference between heterogeneous and homogeneous mixtures is the degree to which the materials are mixed together and the uniformity of their composition.
c)A homogeneous mixture is a mixture in which the components that make up the mixture are uniformly distributed throughout the mixture. The composition of the mixture is the same throughout. There is only one phase of matter observed in a homogeneous mixture at a time. So, you wouldn't observe both a liquid and a gas or a liquid and a solid in a homogeneous mixture.
There are several examples of homogeneous mixtures encountered in everyday life:
A heterogeneous mixture is a mixture in which the components of the mixture are not uniform or have localized regions with different properties. Different samples from the mixture are not identical to each other. There are always two or more phases in a heterogeneous mixture, where you can identify a region with properties that are distinct from those of another region, even if they are the same state of matter (e.g., liquid, solid).
Heterogeneous mixtures are more common than homogeneous mixtures. Examples include:
Cereal in milk
Ice in soda
Bowl of colored candies
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MIXTURE is a combination of two or more substances that are not chemically united and do not exist in fixed proportions to each other. Most natural substances are mixtures.
In the graphic on the left there are four substances - water, alcohol, oil, and food color dye.
A mixture can be physically separated into pure compounds or elements. A pure compound has a constant composition with fixed ratios of elements.
Just about everything that you can think of is probably a mixture. Even the purest of materials still contain other compounds as impurities.Although it is almost physically impossible to isolate absolutely pure substances, a substance is said to be pure if no impurities can be detected using the best available analytical techniques.
Mixtures may exhibit a changing set of physical properties.
For example, mixture of alcohol and water boils over a range of temperatures.
Physical properties such as boiling point or melting point of pure substances are invariant.
For example, pure water boils at 100 degrees C
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SuspensionSolvent(i) It has uniform compos ition.It does not have a uniform compos ition.(ii) No vis ible boundaries of s eparation.Shows vis ible boundaries of separation.(iii) They cons is t of only one phase.They cons is t of more than one phase.Example: sugar + water
→ sugar s olution.Example: s ugar + s and
is probably the most common phospholipid. it is found in egg yolks, wheat germ, and soybeans. contains the ammonium salt of choline joined to the phosphate by an ester linkage. the nitrogen has a positive charge, just as in the ammonium
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differentiate between homogeneous and het...