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Chapter 2

What is the relative mass of a proton and neutron? 1.0
What is the relative charge of a neutron? 0
What is the name given to the two particles that make up the nucleus of an atom? Protons and neutrons
What particle orbits around the nucleus? Electron
What is the comparison of size between the nucleus and total volume of an atom? The nucleus is tiny compared to the total volume
If the nucleus was the size of a grape, how far away would the outer electrons be? 1.5km
What two particles does an atom always have the number of? unless it is an ion. Protons and electrons.
Is it true that isotopes of the same element have different masses? Yes.
What does isotope mean in Greek? at the same place
If an ion of sodium has a charge of +2 does it have 2 less electrons or 2 more? 2 less
Created by: phoebehafiz96



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