Reading the periodic table

Grade 8 Science Worksheet - Building Confidence

Circle the best answer.

1. 1.

   Ari reads the sodium tile. What is sodium's atomic number?

   • 23.0
   • 11
   • Na
2. 2.

   Using the iron tile, how many protons does an iron atom have, Bo?

   • 55.8 protons
   • 26 protons
   • 56 protons
3. 3.

   Atomic number 79 at the top, symbol Au in the middle, name gold, average atomic mass 197.0 at the bottom. Esme reads the gold tile. Which number is gold's average atomic mass?

   • 197.0
   • 79
   • Au
4. 4.

   Using the strip, which elements are in period 2, Kira?

   • Li, Na and K
   • Li through Ne, across the row
   • Just Li and Be
5. 5.

   Lithium, sodium and potassium sit in one column. What do they share, Luz?

   • The same mass
   • The same group, group 1
   • The same period

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.

   Milo looks at the shaded table. Where are the metals?

   • On the right, past the staircase
   • Along the top row
   • On the left and in the middle
8. 7.

   Sulfur sits to the right of the staircase. What kind of element is it, Noah?

   • A metal, since it is on the right
   • A metalloid
   • A nonmetal
9. 8.

   Silicon sits right on the staircase line. What kind of element is it, Pia?

   • A metalloid
   • A metal, like the right side
   • A nonmetal
10. 9.

    Which element has the symbol K, Tala?

    • Calcium
    • Krypton
    • Potassium
11. 10.

    Zee sees Na on a salt label. Which element is Na?

    • Nitrogen
    • Neon
    • Sodium