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RoseWind [281]
3 years ago
9

Classify each of the following as an element [E], a compound [C], or a mixture [M].

Chemistry
1 answer:
Andre45 [30]3 years ago
6 0

Answer:

11) E

12) C

13) M

14) C

15) M

16) M

17) C

18) E

19) C

20) M

Explanation:

An element is a pure substance such as gold and silver. You can find those elements in the periodic table. A compound is a substance consisted of molecules from two or more different elements. Water is made up of hydrogen and oxygen (H2O). Sugar is a very wide category of compounds. Carbon dioxide is made up of carbon and oxygen (CO2). Ice is frozen water/water in the solid state (H2O). A mixture is a group of substances held together physically. Seawater is a mixture of water and salt. A chocolate sundae is a mixture of chocolate sauce and ice cream. Air is a mixture of many gases including oxygen and nitrogen. A big mac is a mixture of burger meat, lettuce, tomatoes, etc.

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Answer:

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Explanation:

Dalton turned Democritus' views on atoms into a scientific theory by employing experimental methods. Atoms can join or detach during chemical processes, but they never transform into a different atom.

Dalton was an excellent polymath, a natural philosopher, and a real scientist. His thorough investigations prompted him to suggest an early atomic theory for which exceptions would be difficult to uncover today:

Dalton offered the following:

Atoms are microscopic particles that make up elements. Atoms of the same element have the same size and mass; however, atoms of other elements have varying sizes and masses when compared to atoms of other elements. Subdivision, creation, and destruction of atoms are all impossible.

All of these ideas were developed after a great deal of testing. Other researchers may replicate his work, and new findings could be included into this atomic idea.

Democritus, on the other hand, was a 5th-century BC Greek philosopher. He conducted no experimental work as far as we know, and none of his publications have survived. He postulated that matter was made up of a single indivisible element known as an atom; the word atom originates from the Greek word oos, which meaning "uncuttable" or "indivisible." So the name atom might be a homage to Democritus.

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