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

Question

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
ionic
bonds.

Answer 1

Let's address the information provided regarding the types of bonds in the substances mentioned:

1. Calcium Chloride (CaCl₂):

   • Calcium is a metal that tends to lose two electrons to achieve a stable electron configuration, becoming a Ca²⁺ ion. Chlorine is a non-metal that gains one electron to become a Cl⁻ ion. When calcium transfers electrons to chlorine, ionic bonds are formed due to the attraction between the positively charged calcium ions and negatively charged chloride ions. Therefore, calcium chloride contains ionic bonds.

2. Copper (Cu):

   • Copper atoms in pennies do not typically transfer electrons as in ionic compounds, but instead, they share electrons to form metallic bonds. In a metallic bond, the electrons are delocalized and shared among many atoms, which allows metals to exhibit properties like conductivity and malleability. Thus, pennies contain metallic bonds.

3. Hydrochloric Acid (HCl):

   • Hydrochloric acid consists of hydrogen (H) and chlorine (Cl). In this compound, there is a sharing of electrons between the hydrogen atom and the chlorine atom, which results in a covalent bond. Thus, hydrochloric acid contains covalent bonds.

To summarize:

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