Grade 10 · Science · Chemistry

10th grade Which kind of bond forms: ionic, covalent or metallic worksheet

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Which kind of bond forms: ionic, covalent or metallic

Grade 10 Science Worksheet - Building Confidence

NameDate

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

Chlorine's electronegativity is 3.16 and sodium's is 0.93 (Pauling, PubChem). What is the difference, Ari?
Oxygen's electronegativity is 3.44 and magnesium's is 1.31 (Pauling, PubChem). What is the difference, Bo?
Oxygen's electronegativity is 3.44 and hydrogen's is 2.2 (Pauling, PubChem). What is the difference, Esme?
Read this first
Dot diagram
Electrons moved, shared or pooled. In NaCl, sodium's one outer electron moves to chlorine, giving Na⁺ and Cl⁻. In H₂O, oxygen shares a pair of electrons with each hydrogen. In a metal such as aluminum, atoms pool their outer electrons into a sea around positive ions.
4.
On the card, what kind of bond holds NaCl together, Jun?
- Ionic: an electron moved
- Metallic: a sea
- Covalent: electrons shared
5.
On the card, what kind of bonds hold H₂O together, Kira?
- Covalent: pairs shared
- Ionic: electrons moved
- Metallic: a sea
6.
On the card, how are electrons held in aluminum metal, Luz?
- Moved to oxygen
- Pooled in a sea
- Shared in pairs
7.
Calcium bonds with chlorine in CaCl₂. What kind of bond is it, Milo?
- Ionic
- Covalent
- Metallic
8.
How are the atoms in a copper wire bonded, Pia?
- Ionic
- Covalent
- Metallic
9.
What attracts Na⁺ and Cl⁻ to each other, Tala?
- Their shared pair of electrons
- Their opposite charges
- Their equal masses
10.
Two oxygen atoms bond in O₂. How are the electrons shared, Zee?
- Equally
- Kept on one atom
- Moved to make ions

Which kind of bond forms: ionic, covalent or metallic. Every version has 10 questions, and the answer key prints on the second page.

I can tell ionic (electrons moved), covalent (shared) and metallic (pooled) bonds apart.
I can use the Pauling electronegativity difference: above about 1.7 ionic, 0.4–1.7 polar covalent, below 0.4 nonpolar (a rule of thumb).
I can find percent ionic character with Pauling's formula, 1 − e^(−d²/4).
I can explain properties from bond type: melting points, conduction, states.

Standard: supports HS-PS1-1

ionic bond: Attraction between ions made by moving electrons

covalent bond: A shared pair of electrons between atoms

polar covalent: Shared unequally, toward the more electronegative atom

metallic bond: Positive ions held in a sea of pooled electrons

ionic character: How ionic a bond is, from its electronegativity difference

Your child added the two electronegativities. The bond depends on the difference: subtract the smaller from the larger.

Your child didn't square the difference. Pauling's formula is 1 − e^(−d²/4), with the difference squared.

Your child mixed up ionic and covalent. Ionic bonds move electrons to make ions; covalent bonds share them.

What is the most common mistake with which kind of bond forms: ionic, covalent or metallic?

Your child added the two electronegativities. The bond depends on the difference: subtract the smaller from the larger.

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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