Oátomo de rutherford (1911) foi comparado ao sistema planetário ( o núcleo atômico representa o sol e a elestrosfera, os planetas). a eletrosfera é a região do átomo que:

a) contém as partículas de carga elétrica negativa.

b) contém as partículas de carga elétrica positiva.

c) contém nêutrons.

d) contém prótons e nêutrons.

e) contém prótons e elétrons.

a) Contains the negatively charged particles.

Explanation:

The Rutherford model of the atom consisted of a dense, positively charged nucleus surrounded by orbiting electrons. In a planetary model, the electrosphere would consist of the electrons.

b), d). and e) are wrong. The positively charged particles — the protons —  were in the nucleus.

c) is wrong. Neutrons were not discovered until 1932.

samuel de champlain. in 1608, king henry iv sponsored pierre dugua, sieur de mons and samuel de champlain as founders of the city of quebec with 28 men. this was the second permanent french settlement in the colony of canada.

qualitative observation deals with data that can be observed with our senses: sight, smell, touch, taste, and hearing. they do not involve measurements or numbers. for instance, colors, shapes, and textures of objects are all qualitative observations.