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12 Nov 2019
have the same number of protons but a different number of neutron A. Ions B. Cations C. Metalloids D. Isotopes 18. Brass is a/an . A. Metalloid B. Alloy C. Transition Metal D. Alkaline Earth Metal 19.IS is 0,000342 in scientific notation. A. 34.2 x 10 B. 3.42 x104 C. 342 x 106 D. 3.42 x104 20. The chemical symbol of Copper is A. Co B. C C. Cu D. Cp 21. Mass can be neither created nor destroyed is the definition of A. The law of conservation of energy B. Newton's postulate C. Einstein's relativity D. The law of conservation of mass
have the same number of protons but a different number of neutron A. Ions B. Cations C. Metalloids D. Isotopes 18. Brass is a/an . A. Metalloid B. Alloy C. Transition Metal D. Alkaline Earth Metal 19.IS is 0,000342 in scientific notation. A. 34.2 x 10 B. 3.42 x104 C. 342 x 106 D. 3.42 x104 20. The chemical symbol of Copper is A. Co B. C C. Cu D. Cp 21. Mass can be neither created nor destroyed is the definition of A. The law of conservation of energy B. Newton's postulate C. Einstein's relativity D. The law of conservation of mass
Nestor RutherfordLv2
3 Feb 2019