The atomic number is the number of___in an atom. electrons protons neutrons isot

Question

The atomic number is the number of___in an atom. electrons protons neutrons isotopes By making several measurements of a sample with the same balance, a chemist obtained values of 5.224 g, 5.235 g, and 5.259 g for the mass of a sample. Without knowing the actual mass of the sample, we can tell that these measurements have___. high precision low precision high accuracy low accuracy The element,___, is classified as a metal on the periodic table. oxygen neon chlorine calcium Which of these shows SI unit prefixes arranged in order from smallest to largest? centi, milli, kilo kilo, milli, centi milli, centi, kilo kilo, centi, milli The mass number of an element refers to that element's number of___. electrons and protons protons and neutrons neutrons and electrons protons, neutrons and electrons The formula unit, Mg(OH)_2, has___hydrogen atoms in it. 0 1 2 4 The chemical property of magnesium is its___. silver color flexibility ability to react with acids metallic nature

Explanation / Answer

7. b

8. a

9. d

10. c

11. b

12. c

13. d.

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