Answer:
Explanation:
Out of aspirin, acetaminophen and caffeine, aspirin is an acid because it is acetyl saliciylic acid . Hence it can be tested with litmus paper .
acetaminophen contains phenolic functional group , hence it is a weak acid . It can be tested with any test with which phenol test are done, like with neutral solution of ferric chloride .
caffeine is weak basic substance . It can also be tested with the help of testing a basic substance .
Answer:
The number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
A compound is a substance that is a mixture of more than one elements.
Compounds are made of two or more elements. These elements are represented by their symbols. These symbols can be identified and the number of elements represented by these symbols are counted.
For example, in the compound H_2OH
2
O :
H represents Hydrogen
O represents Oxygen
The elements in Water ( H_2OH
2
O ) are Hydrogen and Oxygen
Therefore, the number of elements in H_2OH
2
O is 2
Also in, NaClNaCl
The elements are Sodium(Na) and Chlorine(Cl)
There are two elements in NaCl
Hence, the number of elements in a compound is counted by identifying and counting the chemical symbols represented in the chemical formula
Learn more here: brainly.com/question/17571315
Answer:
1.. Lanthanides and actinides are kept separately in the modern periodic table Why?
Lanthanides and actinides are kept separately in the modern periodic table because of following reason:
- If they are placed in the body of the periodic table, the periodic table will become extremely long and hard to recognize
- more scientific and technical reason why they chose to keep the lanthanides and actinides away from the rest of the periodic table was to help in the grouping of elements in blocks
Explanation:
2. Differentiate between long period and short period in any two points.
Long period:
- The 4th and 5th periods of the periodic table are called long periods.
- The long periods coontain 18 elements in them
short period:
- The 2nd and 3rd periods of the periodic table are called short periods.
- The short periods contain 8 elements in them