10th grade Ionization energy, electronegativity and reactivity trends worksheet

Ionization energy, electronegativity and reactivity trends

Grade 10 Science Worksheet

Circle the best answer, or write your answer on the line.

1. 1.

   Magnesium's first ionization energy is 7.646 eV per atom. With 1 eV per atom = 96.485 kJ/mol, what is it in kJ/mol, to 0.01, Bo?
2. 2.

   Chlorine's first ionization energy is 12.968 eV per atom. With 1 eV per atom = 96.485 kJ/mol, what is it in kJ/mol, to 0.01, Esme?

3. Read this first

   First ionization energies down group 1 (PubChem) (PubChem)

   metal	first ionization energy (eV)
   lithium	5.392
   sodium	5.139
   potassium	4.341
   rubidium	4.177
   cesium	3.894

4. 3.

   Using the table, which metal loses its outer electron most easily, Jun?

   • Lithium
   • Cesium
   • Sodium
5. 4.

   Using the table, why do the energies fall down group 1, Kira?

   • The outer electron is farther out
   • The nucleus has fewer protons in it
   • The metals get lighter
6. 5.

   Using the table, how do the energies match group 1's reactivity, Luz?

   • Lower energy, more reactive
   • They aren't linked
   • Higher energy, more reactive
8. 6.

   Using the table, which pulls shared electrons more strongly, carbon or nitrogen, Noah?

   • They pull equally
   • Carbon
   • Nitrogen
9. 7.

   Using the table, why does electronegativity rise across period 2, Pia?

   Use the picture in question 6.

   • The atoms get bigger across the row
   • Electrons are lost
   • More protons pull the same shell
10. 8.

    Why are metals with low ionization energy very reactive, Ren?

    • They hold their electrons very tightly
    • They give up electrons easily
    • They have no electrons
11. 9.

    Why is fluorine such a reactive nonmetal, Tala?

    • It pulls electrons very strongly
    • It is a metal
    • It has a full shell
12. 10.

    Which halogen is most reactive, Zee?

    • Bromine
    • Fluorine
    • Iodine