tacojordan4128
25.11.2020 •
Chemistry
How has atomic theory changed since Dalton wrote his postulates?
Select one:
a. Atomic theory has not changed.
b. We have discovered that atoms are made up of smaller particles, called subatomic particles.
c. We have discovered that atoms of one element can change into atoms of another element through chemical reactions.
d. We have discovered that air is not made of atoms.
Solved
Show answers
More tips
- O Other What happens if you get scared half to death twice?...
- F Family and Home What s That Noise When a Kettle Boils? The Science of Water and Steam...
- L Leisure and Entertainment History of International Women s Day: When Did the Celebration of March 8th Begin?...
- W Work and Career How much does an honest traffic police officer earn in a day?...
- F Food and Cooking Red Caviar: How to Choose the Best?...
- S Style and Beauty How to Get Rid of a Bruise: Tips and Tricks...
- H Health and Medicine Is Massage Necessary? Facts and Opinions...
- L Leisure and Entertainment Should You Buy a Ceramic Knife?...
- C Computers and Internet Best Antivirus: How to Choose Protection for Your Computer?...
- F Food and Cooking When is Easter in 2011?...
Answers on questions: Chemistry
- M Mathematics If two of these stocks are randomly selected, what is the probability at least one will have a price above $45?...
- H History Over the past two decades, the united states has a. had trade deficits in about as many years as it has trade surpluses. b. generally had, or been very near to a trade balance. c....
- E English Identify the noun,pronouns,verbs,adjectives and adverbs 4. Now, as fossil fuels are becoming more scarce, some people are again turning to fuels of the past. 5. Evidently, wood is...
Ответ:
The way in which the atomic theory changed since John Dalton wrote his postulates is that: B. We have discovered that atoms are made up of smaller particles, called subatomic particles.
An atom can be defined as the smallest, indivisible, fundamental unit of matter that forms all chemical elements. Thus, it is the fundamental (basic) building blocks of matter.
The first model of an atom was proposed by a notable English chemist called John Dalton. In the early 1800s, John Dalton adopted Democritus' theory to formulate the first model of an atom.
Dalton's atomic theory postulated that the atom of a chemical element as an impenetrable, indivisible, very small (tiny) but movable hard sphere i.e it cannot be divided into subatomic particles.
However, it has been established by other atomic model that an atom comprises three subatomic particles such as:
ProtonsElectronsNeutronsRead more on atoms here: link
Ответ:
The correct answer is - option b. We have discovered that atoms are made up of smaller particles, called subatomic particles.
Explanation:
Dalton made various postulates related to the atom which is an atomic theory that was first try to describe all properties of atoms. The major part of this atomic theory is that the atoms are unit that makes all the matter which is indivisible.
This postulate of the atomic theory is incorrect and changed as atoms are not indivisible and can divide into subatomic particles (proton, neutron and electron) however atoms are the unit that involves in reaction.
Ответ:
C. to protect themselves
D.
Explanation:When an animal closely resembles the color of its surroundings, it is known as protective coloring. The color of the animal helps the animal blend in with the environment and makes it harder for predators to see it. This protects the animal from predators.