Question

1. classify these as an element, compound, homogeneous solution or heterogeneous mixture.

a. chex mix
b. ( mathrm{cuso}_{4}(mathrm{~s}) )
c. ( mathrm{agno}_{3}(mathrm{aq}) )
d. ( mathrm{h}_{2} mathrm{o}(mathrm{l}) )
e. aluminum
f. blood
g. gold

Explanation:

• a. Chex Mix: It is a combination of different components (like cereals, snacks etc.) that are not uniformly distributed. So, it is a heterogeneous mixture.
• b. \(CuSO_4(s)\): It is made up of copper (\(Cu\)), sulfur (\(S\)) and oxygen (\(O\)) atoms chemically bonded together. So, it is a compound.
• c. \(AgNO_3(aq)\): It is a solution where \(AgNO_3\) is dissolved in water (\(aq\) stands for aqueous). The composition is uniform throughout. So, it is a homogeneous solution.
• d. \(H_2O(l)\): It is made up of hydrogen (\(H\)) and oxygen (\(O\)) atoms chemically bonded. So, it is a compound.
• e. Aluminum: It is made up of only aluminum atoms. So, it is an element.
• f. Blood: It has components like red blood cells, white blood cells, plasma etc. that are not uniformly distributed. So, it is a heterogeneous mixture.
• g. Gold: It is made up of only gold atoms. So, it is an element.

Answer:

a. Heterogeneous mixture
b. Compound
c. Homogeneous solution
d. Compound
e. Element
f. Heterogeneous mixture
g. Element