3. Chose the correct answer. (10_2") (1) All the following elements are metals except: A) B) Ca C) Cs D) Cu (2) The temp

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3 Chose The Correct Answer 10 2 1 All The Following Elements Are Metals Except A B Ca C Cs D Cu 2 The Temp 1 (50.86 KiB) Viewed 47 times

3. Chose the correct answer. (10_2") (1) All the following elements are metals except: A) B) Ca C) Cs D) Cu (2) The temperature of 25 °C is in Kelvins. A) 103 B) 138 C) 166 D) 248 E) 298 (3) and A) Protons, electrons D) none of the above reside in the atomic nucleus. B) Electrons, neutrons C) Protons, neutrons E) Neutrons, only neutrons (4) Metals in Group 2 are called? A alkali metals Balkaline earth metals Ctransition metals D ductile (5) A separation process that depends on differing abilities of substances to form gases is called ) A) filtration B) distillation C) solvation D) chromatography E) all of the above are correct (6) Which one of the following is a pure substance? A concrete B wood Csalt water D elemental copper E) milk (7) In the following list, only is not an example of a chemical reaction.( A) dissolution of a penny in nitric acid B) a burning candle C) the condensation of water vapor D) the formation of polyethylene from ethylene E) the rusting of iron (8) Round the number 0.08535 to two significant figures? A) 0,09 B) 0.086 C) 0.0854 D) 0.085 E) 0.08535 (9) Elements in Group 8A are known as the A) halogens B) alkali metals D) noble gases E) chalcogens C) alkaline earth metals (10) Potassium is a A) metal, nonmetal D) metalloid, nonmetal and chlorine is a B) metal, metal E) nonmetal, metal C) metal, metalloid