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
covalent
ionic
metallic

Explanation:

1. Calcium chloride forms when calcium (a metal) transfers electrons to chlorine (nonmetals), which is the defining feature of ionic bonds.
2. Copper in pennies is a metal, and metallic bonds involve a shared "sea" of electrons between metal atoms.
3. Hydrochloric acid (HCl) forms when hydrogen and chlorine (both nonmetals) share electrons, which is characteristic of covalent bonds.

Answer:

Calcium chloride contains ionic bonds
Pennies contain metallic bonds
Hydrochloric acid contains covalent bonds