Reading the Periodic Table of Elements

Properties of Atoms and Subatomic Particles

Microsoft Word Version

Across

1 The direction (orientation) of rows in any table (left to right OR right to left)

6 All of the elements in the third period (horizontal row) of the periodic table have ____________ energy levels (or shells)

7 A quality possessed by an object that helps you identify it

9 The special name for the rows (horizontals) in the PERIODIC Table of Elements

12 The ATOMIC _____________ of any element indicates the quantity of protons found in the nucleus of that element's atoms

13 If you were able to "split" a carbon atom into two atoms (each with an equal number of protons), those two atoms would be ____________ atoms

18 The number of these in any atom determines what element the atom is. The number of these is that element's ATOMIC number.

19 In a table these are vertical

20 A common way of organizing information in columns and rows

25 The direction (orientation) of columns in any table (up and down OR down and up)

27 If you were able to "fuse" two atoms of oxygen so that no protons were lost the result would be a _________________ atom

28 A form of an element whose atoms contain a different number of neutrons

29 If one of the protons in an oxygen atom were to decay, the resulting atom would no longer be oxygen but _______________

31 In a table these are horizontal

32 Atoms of Aluminum have this many protons

33 Atoms of this element have 7 protons, 7 neutrons, and 7 electrons.

Down

2 The groups (vertical columns) in the periodic table are arranged the way they are because every atom in a group has the same number of electrons in its outer __________ (energy level)

3 All of the elements in any row (period) of the Periodic Table have the same number of electron ____________ (or energy levels)

4 The special name for the columns (verticals) in the Periodic Table of Elements

5 Atoms of Phosphorus have this many protons

8 Every element in the first column (Group 1) has this many electrons in its outermost shell

10 To figure the average number of neutrons in an element's atom you can __________ the Atomic Number from the Atomic Mass.

11 These subatomic nuclear particles have a mass slightly higher than a proton. (Hint: they are uncharged.)

14 Atoms of this element have 12 protons, 12 electrons and 12 neutrons.

15 The elements in the LAST column (Group 8) have _________ outer shells. (They are not lacking any electrons and they do not have any extra electrons.)

16 If you were able to add a proton to an atom of Boron, you would then have a ___________ atom

17 Substances that (when pure) are made up of only one kind of atom

21 The kind of table that best organizes and explains elements, their atomic structure, and their chemical properties

22 The Atomic Mass is based on the mass of this subatomic particle which is set at 1.

23 Atoms of sodium have this many electrons

24 Atoms of this element have 18 protons

26 If the nuclei of two hydrogen atoms (each having only one proton) fused to form a new atom with two protons, that new atom would be a ___________ atom.

30 The smallest units of matter (as far as "Chemistry" goes)

Rows Horizontal Columns Vertical Periodic Property Periods

Elements Protons Shells Three Groups Outer One

Atoms Number Helium Nitrogen Carbon Lithium Full

Table Proton Neutrons Magnesium Nitrogen Argon

Thirteen Fifteen Eleven Sulfur Isotope Subtract