Jj thomson's cathode-ray tube experiment showed which of the following? a. matter can be neither created nor destroyed b. atoms are small individual spheres c. electrons are in a cloud surrounding positively charged particles d. atoms consist of at least some negatively charged particles
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Three alkali metals in group 1 are a. calcium, strontium, barium b. boron, aluminum, gallium c. sodium, potassium, rubidium d. fluorine, iodine, chlorine
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Stage in which a typical star has completely stopped fusion
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Jj thomson's cathode-ray tube experiment showed which of the following? a. matter can be neither cr...
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