Atoms, Elements And Molecules 2: Question Preview (ID: 12670)

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Which of the following is the chemical symbol for copper?
a) Au b) Cu c) Co d) C
What element has 19 protons?
a) A b) N c) K d) C
A certain atom has 18 protons, 18 electrons, and an atomic mass of 39.95. How many neutrons does it have?
a) 36 b) 22 c) 32 d) 40
A certain atom has 4 protons, 4 electrons, and 5 neutrons. Its atomic mass is ____.
a) 4 b) 9 c) 12 d) 13
Matter is anything that has _________ and takes up ________.
a) mass, space b) color, odor c) shape, atoms d) weight, energy
__________ is the smallest atom.
a) Hydrogen b) Helium c) Nitrogen d) Particle
The electrons in an atom are located in the ___________.
a) nucleus b) electron cloud c) positive charge d) element
What element has 9 protons?
a) C b) N c) O d) F
Which of the following is the chemical symbol for lead?
a) Ld b) L c) Pb d) Sn
The smallest unit of matter in this list is ________.
a) a gas b) an atom c) a cell d) a molecule
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