Which scientist performed the cathode ray experiment leading to the discovery of electrons?A.
Dalton
B.
Rutherford
C.
Democritus
D.
Bohr
E.
Thomson
Answers
Answer:
The scientist is E. Thomson.
Explanation:
In the late nineteenth century, physicist J.J. Thomson started trying different things with cathode beam tubes. Cathode beam cylinders are fixed glass tubes from which the greater part of the air has been emptied. A high voltage is applied crosswise over two terminals toward one side of the cylinder, which makes a light emission stream from the cathode (the contrarily charged anode) to the anode (the emphatically charged cathode).
The cylinders are called cathode beam tubes on the grounds that the molecule bars or “cathode beam” begins at the cathode. The beam can be distinguished by painting a material known as phosphors onto the most distant finish of the cylinder past the anode. The phosphors sparkles, or produces light, when affected by the cathode beam.
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Answers
Answer:
If mass remains the same while the volume of a substance increases, the density of the substance will decrease.
Explanation:
Answers
Look, this shouldn't be that hard. As long as you know the symbol for each element, you just put a subscript to indicate how many there are in each compound.
For the second row, there is one C and 4 H's. That's , or methane.
For the third row, there is one Si and 2 O's. That's , or common glass/quartz.
Answers
Answer: Liquid state
Explanation:
There are three states of matter named as solid , liquid and gas.
Solids have fixed shape and fixed volume as the molecules are strongly bonded to each other.
Liquids have fixed volume but no fixed shape as the molecules are weakly bonded to each other.
Gases have neither fixed shaped nor fixed volume as the molecules are very weakly bonded to each other.
Answers
Answers
B. Carbon
C. Methane
D. Water
Answers
Carbon is the substance can not be decomposed by a chemical change. Therefore, option B is correct.
What is chemical change ?
A chemical change is the transformation of one material into another, the formation of new materials with different properties, and the formation of one or more new substances. It occurs when one substance reacts with another to form a new substance.
Carbon and water Although carbon dioxide and carbonic acid are simpler compounds, they are still compounds. As a result, they can decompose and leave us with the basic elements' hydrogen, oxygen, and carbon. Compounds degrade due to chemical changes.
Elements are pure substances that cannot be broken down using conventional chemical methods such as heating, electrolysis, or reaction. Elements include gold, carbon, silver, and oxygen.
Thus, option B is correct.
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