Question

1. classify each example below as the type of matter is it (element, compound, homogeneous mixture, or heterogeneous mixture)

a. table salt:
b. milk:
c. oxygen (o₂):
d. lemonade:
e. water:
f. carbon dioxide:
g. vegetable soup:
h. peanut butter:

Explanation:

Step1: Recall definitions

Elements are pure substances made of one - type of atom. Compounds are pure substances made of two or more different types of atoms chemically combined. Homogeneous mixtures have uniform composition throughout, and heterogeneous mixtures have non - uniform composition.

Step2: Analyze table salt

Table salt (sodium chloride, NaCl) is a compound as it is made of sodium and chlorine atoms chemically bonded.

Step3: Analyze milk

Milk is a heterogeneous mixture as it contains fat globules, proteins, and water which are not uniformly distributed at a microscopic level.

Step4: Analyze oxygen

Oxygen ($O_2$) is an element as it is made of only oxygen atoms.

Step5: Analyze lemonade

Lemonade is a homogeneous mixture as it has a uniform composition of water, sugar, lemon juice etc.

Step6: Analyze water

Water ($H_2O$) is a compound as it is made of hydrogen and oxygen atoms chemically bonded.

Step7: Analyze carbon dioxide

Carbon dioxide ($CO_2$) is a compound as it is made of carbon and oxygen atoms chemically bonded.

Step8: Analyze vegetable soup

Vegetable soup is a heterogeneous mixture as it contains vegetables, broth etc. which are not uniformly distributed.

Step9: Analyze peanut butter

Peanut butter is a homogeneous mixture as it has a relatively uniform composition.

Answer:

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