The Periodic Table Review Sheet (Page 2 of 2) in pdf

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17. What is the difference between Carbon 12 and Carbon 14 in terms of neutrons? How many neutrons

does Carbon 12 have and how many does Carbon 14 have (Carbon has 6 protons)? Carbon 12 and Carbon

14 are ________ of Carbon since they have different numbers of neutrons.

18.

A majority of jewelry is made up of what type or group of atoms (elements)? Why?

19. What one particle (protons, neutron, electron) determine one element from another?

(hint: it is equal to the atomic number of the element)

20. Two atoms are walking down the street and one looses an electron. This atom is now an _____ and has a _______

(positive, negative, neutral) charge.

21. If you look at Oxygen which has 8 protons, you know it also must have how many electrons so that the overall

charge is neutral?

22. What are the most important electrons called; the ones that are involved in bonding and determine if an atom is

reactive or not? Are they closest to the nucleus or furthest away? Why?

23. 8 is GREAT. What does this refer to in terms of atoms and valence electrons?

24. What does the narrator in the Elements video mean when he says the following of Iron (Fe): “I am

malleable; I bend to your will.”

25. Give an example of something that is ductile. What elements are ductile?

26. How many periods (rows) are there in the periodic table? Are periods vertical or horizontally across?

27. What family of metals react violently (explode) when placed in water? Name 1 element from the family.

28. Why are the halogens so reactive? Which halogen is the most reactive? Are the halogens more reactive

than the alkali metals? What one thing do the halogens want to gain more than anything else?

29. Which takes less energy, gaining 1 electron or losing 7 electrons?

30. The zigzag line on the periodic table separates the ______ from the ______. Which are located on the left

and which are located on the right side of the zigzag line?

Complete the following table without using a periodic table (all elements are neutrally charged):

Element

Atomic #

Atomic Mass

Protons

Neutrons

Electrons

Lithium

6.94

Aluminum

Sulfur

32.07

Chlorine

Label the following for Oxygen: (atomic mass, atomic number, chemical symbol, element name)

Finally, draw: a Bohr Model of Oxygen, a Bohr Model of Oxygen 18, and for an Oxygen atom that has +2 charge.

The Periodic Table Review Sheet Page 2