Answer:
hmmm
Explanation:
hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
The answer is physical or chemical change
Pure Substance- Element
Explanation:
Pure Substance VS. Mixture:
A pure Substance CANNOT be separated by physical changes, but a Mixture can.
PURE SUBSTANCE: Element VS. Compound:
An Element is one simple atom while a compound is two or more.
Example: Al (Aluminum) is an Element. CaCl (Calcium Chloride) is a compound.
You can split a compound with chemical changes because if you were to take the example, it would be a Calcium atom and a Chlorine atom.
You CANNOT split a single atom (Element) unless you want to make an atomic bomb which takes a lot of energy and you don’t want to destroy the whole world.
MIXTURE: Homogeneous VS. Heterogeneous:
Homo- mixed; cannot differentiate pieces
Hetero- can differentiate pieces
EX: homo- ketchup (can you see the difference in the vinegar and tomato paste? No)
Hetero- chicken noodle soup (there’s broth, chicken, peas, carrots, and other things)
The balanced molecular equation , with Na⁺ as the spectator ion .
2NaCrO₂(aq) + 2H₂O(l) + 6NaClO(aq) →2CrO₄(aq) + 3Cl₂(g) + 4NaOH(aq)
There are following steps involve in balanced redox reaction in basic medium .
- Divide the reaction into two half reactions .
- Balance the elements other than oxygen and hydrogen .
- Balance the oxygen atom by adding .
- Balance the hydrogen atom by adding .
- Add on bath side .
- Combine and to form form .
- Balance the charge by adding .
- Add the half reaction and simply .
The species which reduces the other species in the redox reaction is called oxidizing agent . Similarly , the species which oxidize the other species in the redox reaction is called reducing agent .
To learn more about balanced redox reaction please click here ,
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Storms are made from a combination of warm evaporated heat that falls back down near sunset, some fo the jet streams curve for hundreds of miles one of them curves from NA to Antarctica and all the way back in a huge belt, the storm once caught in a jet stream will go where ever the jet stream goes, and a good bit lead across NA.
I hope this helps