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What are all the examples of pure substances?
Some examples of pure substances include elements like gold, oxygen, and carbon, as well as compounds like water (H2O) and salt (NaCl). These substances have a uniform and consistent composition throughout.
Was it possible to determine if a substance was pure by just its appearance?
No, it is not always possible to determine if a substance is pure just by its appearance. Impurities can be present in small amounts and may not be visible to the naked eye. Chemical analysis is typically needed to accurately determine the purity of a substance.
Does plastic substances releases any harmful substances when it exposes to sunlight?
Yes, when plastic substances are exposed to sunlight, they can release harmful substances such as BPA or phthalates. These chemicals may leach out of the plastic material and enter the surrounding environment, potentially causing harm when ingested or absorbed by humans or animals.
Is it possible to distinguish chalk from kaolin without using acid explain?
Yes, it is possible to distinguish chalk from kaolin without using acid. One way is to conduct a streak test - kaolin will have a white streak while chalk will not. Additionally, kaolin has a greasy feel when touched, unlike chalk which feels powdery. Lastly, kaolin is less friable and harder than chalk, so their physical properties can also help differentiate them.
Why did one crystal turn black in a swarovski ring?
One possible reason for a Swarovski crystal turning black in a ring could be exposure to chemicals or harsh substances that caused the crystal to oxidize or lose its original color. It could also be due to the crystal being damaged or scratched, affecting its appearance.
Is it true that a homogeneous mixture is a mixture in which it is difficult to distinguish the substances from one another?
It is true because the solution is clean and transparent. It is not possible to separate the constituents by physical means.
What are all the examples of pure substances?
Some examples of pure substances include elements like gold, oxygen, and carbon, as well as compounds like water (H2O) and salt (NaCl). These substances have a uniform and consistent composition throughout.
Is the difference between a pure substance and a mixture always easy to observe?
No, the difference between a pure substance and a mixture is not always easy to observe. While pure substances have definite chemical compositions and properties, mixtures consist of two or more substances physically combined. Some mixtures can be challenging to distinguish from pure substances based on visual observations alone.
How can you distinguish memory addresses from you IO port addresses?
Not possible, both are numbers.
A gene that makes it possible to distinguish bacteria that carry the plasmid from those that dont?
Genetic marker.
Why is it possible to distinguish between classical music and jazz by listening to it?
Because the two are stylistically different.
Can all water substances evaporate like water can?
No, it is not possible.
Can two substances in a solution can be easily separated?
Yes, it is possible.
Does butter react chemically with other substances?
Yes, it is possible.
Why is it possible to distinguish between classical music and jazz simply by listening to it?
Because the two are stylistically different.
What substances rusts iron?
Rusting is possible in the presence of oxygen and water.
What examples are there for a theoretical probability of 100?
No probability - theoretical or not - can be 100. Therefore no examples are possible.No probability - theoretical or not - can be 100. Therefore no examples are possible.No probability - theoretical or not - can be 100. Therefore no examples are possible.No probability - theoretical or not - can be 100. Therefore no examples are possible.
