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Chemistry
Chapter 2
Question | Answer |
---|---|
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 |