Science

4. Rusting is an example of ____________.
5. A form of chemical bonding where one or more pairs of electrons are shared between atoms.
7. The amount of protons and neutrons in an atom.
9. Arranges the elements based on their atomic number and their properties.
12. The measure of the ability of an atom or a molecule to attract a pair of electrons in a covalent bond.
14. Chemicals that will change colour when added to an acid or a base are called:
18. In a __________ displacement reaction, there are two rearrangements that occur.
20. When an acid is added to a base _____________ reaction occurs.
22. 2 H2O2 → 2 H2O + O2 is an example of a _________ reaction.
23. A bunch of atoms bonded together are called:
24. Has a negative charge and is found orbiting the nucleus.

1. Burning a substance in oxygen is an example of:
2. Has a positive charge and is found inside the nucleus.
3. Has no charge and is found inside the nucleus.
6. The electrons in the outermost shell are called:
8. 2Na + Cl2 → 2NaCl is an example of a _______ reaction.
10. The columns on the periodic table are called:
11. The word "atom" is derived from this Greek word.
13. _________ defines a material’s ability to conduct electricity.When electrons flow from atom to atom.
14. The type of bond between a non-metal and a metal atom that occurs when charged atoms (ions) attract.
15. The amount of protons in an atom.
16. The rows on the periodic table are called:
17. 2HCl(aq)+Zn(s)→ZnCl2(aq)+H2(g)is an example of a ________ displacement reaction.
19. Group 18, Period 6 on the Periodic Table (Element Name)
21. An ________ of an element occurs when the nucleus loses (or gains) a neutron.