Question

practice
directions: identify whether the following substances are held together by ionic or covalent bonds.
substance ionic or covalent

1. water, h₂o
2. propane, c₃h₈
3. magnesium oxide, mgo
4. methane, ch₄
5. magnesium chloride, mgcl₂
6. potassium bromide, kbr
7. calcium chloride, cacl
8. carbon dioxide, co₂
9. ammonia, nh₃
10. glucose, c₆h₁₂o₆

Explanation:

Step1: Recall bond - type rules

Ionic bonds form between a metal and a non - metal, while covalent bonds form between non - metals.

Step2: Analyze Propane ($C_3H_8$)

Carbon and hydrogen are non - metals, so it has covalent bonds.

Step3: Analyze Magnesium oxide ($MgO$)

Magnesium is a metal and oxygen is a non - metal, so it has ionic bonds.

Step4: Analyze Methane ($CH_4$)

Carbon and hydrogen are non - metals, so it has covalent bonds.

Step5: Analyze Magnesium chloride ($MgCl_2$)

Magnesium is a metal and chlorine is a non - metal, so it has ionic bonds.

Step6: Analyze Potassium bromide ($KBr$)

Potassium is a metal and bromine is a non - metal, so it has ionic bonds.

Step7: Analyze Calcium chloride ($CaCl_2$)

Calcium is a metal and chlorine is a non - metal, so it has ionic bonds.

Step8: Analyze Carbon dioxide ($CO_2$)

Carbon and oxygen are non - metals, so it has covalent bonds.

Step9: Analyze Ammonia ($NH_3$)

Nitrogen and hydrogen are non - metals, so it has covalent bonds.

Step10: Analyze Glucose ($C_6H_{12}O_6$)

Carbon, hydrogen, and oxygen are non - metals, so it has covalent bonds.

Answer:

1. Covalent
2. Ionic
3. Covalent
4. Ionic
5. Ionic
6. Ionic
7. Covalent
8. Covalent
9. Covalent