Who Organized elements into four groups based on properties:
Answers
the answer is lavoiser
Final answer:
Antoine-Laurent de Lavoisier, a French chemist, organized elements into four groups based on their properties: gases, nonmetals, metals, and earths. This was a monumental contribution to the field of Chemistry.
Explanation:
The person you're referring to who organized elements into four groups based on their properties is the French chemist Antoine-Laurent de Lavoisier. Lavoisier is commonly known as the 'Father of Modern Chemistry' and his work contributed significantly to the development of this field. In the late 18th century, he sorted 33 elements into four categories: gases, nonmetals, metals, and earths, by recognizing their similar properties. This was a significant step at the time, further paving the way for the modern periodic table.
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Related Questions
When the pH of a solution changes from a pH of 5 to a pH of 3, the hydronium ion concentration isA. 0.01 of the original contentB. 0.1 of the original contentC. 10 times the original contentD. 100 times the original content
Amber was used by the Greeks to study? A.) metallurgy B.) magnetism C.) static charge D.) Jewelry Making
Which statement best compares the energy involved in melting with the energy involved in boiling for a given liquid?A....Energy is removed from the particles in each change, but more energy is removed in melting than in boiling because the attractions are weaker. B....Energy is removed from the particles in each change, but more energy is removed in boiling than in melting because the attractions are weaker. C....Energy is added to the particles in each change, but boiling requires more energy than melting because the attractions must be completely overcome. D....Energy is added to the particles in each change, but melting requires more energy than boiling because the attractions must be completely overcome.
Which statement explains how the bands in the crystal of a metal are like atomic orbitals?
Answers
The given value is
Since, so:
=
Since, so:
Hence, 9.7 kilometers per liter of gasoline is .
B)farm land
C)highways
D)public transportation
Answers
Answer: Option (A) is the correct answer.
Explanation:
An urban area is an area which is developed and it is a place where people can get almost all the things of their need easily.
Therefore, more an more people would like to live in an urban area as there will be more resources which can make people's work easy.
Hence, we can conclude that out of the given options an urban area is characterized by a dense human population.
Cu
F
Co
Answers
Answer: Option (a) is the correct answer.
Explanation:
Based on reactivity series, the reactivity of some metals in decreasing order is as follows.
Li, K, Ba, Ca, Mg, Al, Mn, Zn, Cr, Fe, Co, Ni
Thus, it can be seen that Al is more reactive than Fe, so it will replace iron in a single displacement reaction. Whereas cobalt is less reactive than iron hence, it will not replace Fe.
Fluorine being an anion will not replace a cation because in displacement reactions, only a cation can replace another cation and an anion can replace another anion.
Hence, we can conclude that Al will replace iron (Fe) in a compound during a single replacement reaction.
Al
Because its higher than the other options in reactivity series
hope this helps
Answers
Answer: We are able to smell it because the particles move from their high concentration to low concentration and mix with the gases present in the atmosphere and thus we are able to smell it.
Diffusion is a process in which a movement of substance takes place from a high concentration area to a low concentration area due to the random movement of the particles. Diffusion happens in gases more faster than liquids and solids because of the random movement of their particles.
Other substances exhibiting this behavior is perfume, incense sticks and cooking of food etc.
b-iron
c- bacteria
Answers
Answer:
Iron
Explanation:
cause i am big brain
b. NaCl
c. CO2
d. H2O
Answers
Answer:
NaCl does not contain molecules
Explanation:
Molecules are made of multiple atoms bonded together to form a single entity.
In (H-H), two hydrogen atoms are bonded together through a covalent bond. Hence it is a molecule.
In (O=C=O), one carbon atom and two oxygen atoms are bonded together through double bond. Hence it is molecule
In (H-O-H), one oxygen atoms and two hydrogen atoms are bonded together through single bond. Hence it is a molecule.
In NaCl, ions are held together through ionic attraction forces. Here no actual bond exists between
. Both
remain present as individual ions.
Hence NaCl does not contain molecules