Question

1. label the following as e -element, c-compound, heterogeneous mixture (hm) and homogeneous mixture (s)-solution. (4 pts) fe-__ n₂o₅ - chocolate chip ice cream- nahco₃- tomato sauce - gasoline- salad bar - n₂-__ 5. compare and contrast elements and compounds. list at least three differences. (6 pts)

Explanation:

• Fe (Iron): An element is a pure substance made of only one type of atom. Fe is made of iron atoms only, so it is an element (E).
• \(N_{2}O_{5}\) (Dinitrogen pentoxide): A compound is a pure substance formed when two or more elements chemically combine. \(N_{2}O_{5}\) is formed from nitrogen and oxygen elements chemically bonded, so it is a compound (C).
• Chocolate - chip ice cream: A heterogeneous mixture (HM) has visibly different parts. In chocolate - chip ice cream, you can see the chocolate chips and the ice - cream base as distinct parts.
• \(NaHCO_{3}\) (Sodium bicarbonate): It is a compound (C) as it is formed by the chemical combination of sodium (Na), hydrogen (H), carbon (C), and oxygen (O) atoms.
• Tomato sauce: It is a heterogeneous mixture (HM). It contains various ingredients like tomatoes, spices, etc., which are not uniformly distributed at a visual level.
• Gasoline: It is a homogeneous mixture (S - solution). Gasoline is a mixture of hydrocarbons that are uniformly mixed at a molecular level.
• Salad bar: A salad bar has a variety of different foods (e.g., lettuce, tomatoes, cucumbers, dressings) that are not uniformly mixed, so it is a heterogeneous mixture (HM).
• \(N_{2}\) (Nitrogen gas): It is made of only nitrogen molecules (\(N_{2}\)), so it is an element (E) as it consists of only one type of element (nitrogen).

Answer:

Fe - E, \(N_{2}O_{5}\) - C, Chocolate chip ice cream - HM, \(NaHCO_{3}\) - C, Tomato sauce - HM, Gasoline - S, Salad bar - HM, \(N_{2}\) - E