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6. What does the nucleus of an atom contain?
- Protons and neutrons
- Electrons and neutrons
- Protons and electrons
- Electrons
7. Why are the elements in group 0 unreactive?
- They have no electrons
- They have full outer electron shells
- They have the same amount of protons
- They have neutrons and protons
8. What is the relative charge of an Electron?
9. Non-metal compounds form molecules held together by
- Covalent bonds
- Ionic bonds
- Metallic bonds
- Simple ionic bonds
10. What is the relative charge of a Neutron?
11. Where are electrons found?
- In the nucleus
- In a metal
- In energy level (shells)
- In a compound
12. What is the relative charge of a proton?
13. What subatomic particle is around the nucleus
- Ionic
- Protons
- Electrons
- Neutrons
14. What do elements in the same group have in common?
- The same number of protons and neutrons
- Different number of protons and neutrons
- The same number of electrons on the outer shell
- The same number of protons
15. What is the atomic number?
- The number of ions in an element
- The number of atoms in an element
- The number of protons in an element
- The number of electrons in an element
16. The mass of the product always equals the..
- the mass of protons
- mass of reactants
- the mass of electrons
- the mass of neutrons
17. How many electrons does the second and third shell hold?
18. What is the mass number?
- The number of protons+neutrons
- The number of protons, neutrons and electrons
- The number of protons+electrons
- The number of electrons+neutrons