Reading the periodic table

Grade 8 Science Worksheet

Circle the best answer.

1. 1.

   An atom has 16 protons. Using the two tiles, which element is it, Bo?

   • Either one; the numbers match
   • Sulfur, with atomic number 16
   • Oxygen, with mass about 16.0
   • Neither one
2. 2.

   An atom has 4 protons. Using the two tiles, which element is it, Esme?

   • Beryllium, with atomic number 4
   • Helium, with mass about 4.0
   • Neither one
   • Either one; the numbers match
3. 3.

   Using the strip, which element should behave most like sodium, Jun?

   • Potassium, in the same group
   • Magnesium, next to it in period 3
   • Chlorine, in period 3 too
   • Beryllium
4. 4.

   Using the strip, which element should behave most like fluorine, Kira?

   • Sulfur
   • Chlorine, in the same group
   • Oxygen, in period 2 too
   • Neon, next to it in period 2
5. 5.

   Using the strip, which element should behave most like magnesium, Luz?

   • Potassium
   • Calcium, in the same group
   • Sodium, in period 3 too
   • Aluminum, next to it in period 3

6. Read this first

   Use this

   Outline of the periodic table (IUPAC) with a thick staircase line from boron down to tellurium. Metals are shaded on the left and in the middle; nonmetals are unshaded on the right; the elements along the staircase (B, Si, Ge, As, Sb, Te) are dotted as metalloids. Hydrogen, at the top left, is unshaded.

7. 6.

   Germanium sits on the staircase line. How should Milo classify it?

   • Metalloid
   • A gas
   • Nonmetal, since it is not shiny
   • Metal, since metals sit on the right
8. 7.

   Copper sits in the middle of the table. How should Noah classify it?

   • Metal
   • Noble gas
   • Metalloid
   • Nonmetal, since metals are on the right
9. 8.

   Bromine sits on the right, past the staircase. How should Pia classify it?

   • Nonmetal
   • Metalloid
   • Metal, since it is on the right
   • Metal, since it is a liquid
11. 9.

    Using the strip, which period is calcium in, Ren?

    • Period 2, its column
    • Period 4
    • Period 1
    • Period 20, its atomic number
12. 10.

    Using the strip, which group is oxygen in, Tala?

    Use the picture in question 9.

    • Group 16
    • Group 1
    • Group 8, its atomic number
    • Group 2, its row