Answer:
The order and arrangement of the planets and other bodies in our solar system is due to the way the solar system formed. Nearest the Sun, only rocky material could withstand the heat when the solar system was young. For this reason, the first four planets—Mercury, Venus, Earth and Mars—are terrestrial planets.
Explanation:
c. can be broken down into atoms.
b. smells.
d. reacts with other substances.
The discoverer of the electron was Thomson. J. J. Thomson portrayed his atom model to look like a plum pudding. In his model, he described that an atom is composed mainly of electrons stuck within a sea of positive material.
The 'plum pudding' model of the atom, which depicted negative electrons embedded in a positively charged mass, was proposed by J.J. Thomson in 1904. This model was later superseded by Ernest Rutherford's nuclear model, which described the atom as having a central, positively charged nucleus surrounded by orbiting electrons.
The atomic model that portrays negative electrons embedded within a sea of positive material is known as the 'plum pudding' model. This model was proposed by J.J. Thomson in 1904. It describes an atom as being primarily composed of an unknown positively charged mass, with negative electrons interspersed within, akin to plums in a pudding.
Thomson's model was a significant step forward in atomic theory, but it was also fundamentally flawed. It was eventually superseded by the nuclear model of the atom, proposed by Ernest Rutherford and his colleagues in 1911. Rutherford's model proposed that most of the atom's mass and its positive charge is concentrated in a central nucleus, with the negative electrons orbiting this central core, rather like the planets orbit the sun. This model more accurately accounts for atomic behavior and structure as we understand them today.
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