Question

calcium chloride is used to make pickles. the calcium atom transfers electrons to chlorine atoms, leading to the formation of chemical bonds. calcium chloride contains bonds.
copper atoms are used to produce pennies. the copper atoms in pennies share many electrons. pennies contain bonds.
hydrochloric acid is the main acid that helps break down food in the stomach. the atoms of hydrochloric acid share electrons. hydrochloric acid contains bonds.

Explanation:

• For calcium chloride: When one atom transfers electrons to another, an ionic bond is formed. Calcium (a metal) transfers electrons to chlorine (a non - metal), so it has ionic bonds.
• For copper in pennies: In metals, a sea of delocalized electrons is shared among many atoms, which is characteristic of metallic bonds.
• For hydrochloric acid: When atoms share electrons, a covalent bond is formed. Hydrogen and chlorine (both non - metals) share electrons in hydrochloric acid ($HCl$), so it has covalent bonds.

Answer:

• Calcium chloride: ionic
• Pennies (copper): metallic
• Hydrochloric acid: covalent