Question

matter classification worksheet
all matter can be classified as either a substance or mixture. a substance is an element or a compound. a mixture is heterogeneous or homogeneous.

classify each of the following as either substance or mixture. if it is a substance, write element or compound in the appropriate column. if it is a mixture, write heterogeneous or homogeneous in the appropriate column. be ready to defend your answer!!!

type of matter	substance	mixture
water (h₂o)
lucky charms
salt water
nitrogen (n₂)
salt (nacl)
rocky road ice cream
rubbing alcohol
pure air
iron (fe)

Explanation:

Step1: Recall definitions

An element is a pure - substance made of only one type of atom. A compound is a pure - substance made of two or more different types of atoms chemically combined. A homogeneous mixture has a uniform composition throughout, and a heterogeneous mixture has a non - uniform composition.

Step2: Analyze Chlorine ($Cl_2$)

Chlorine ($Cl_2$) is a substance and an element as it is made of only chlorine atoms.

Step3: Analyze Water ($H_2O$)

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

Step4: Analyze Lucky Charms

Lucky Charms is a mixture and heterogeneous as it has different components (marshmallows, cereal pieces) that are not uniformly distributed.

Step5: Analyze Salt water

Salt water is a mixture and homogeneous as the salt is uniformly dissolved in the water.

Step6: Analyze Nitrogen ($N_2$)

Nitrogen ($N_2$) is a substance and an element as it is made of only nitrogen atoms.

Step7: Analyze Salt ($NaCl$)

Salt ($NaCl$) is a substance and a compound as it is made of sodium and chlorine atoms chemically combined.

Step8: Analyze Rocky road ice - cream

Rocky road ice - cream is a mixture and heterogeneous as it contains ice - cream, nuts, and marshmallows which are not uniformly distributed.

Step9: Analyze Rubbing Alcohol

Rubbing alcohol is a mixture and homogeneous as it is a solution of isopropyl alcohol and water.

Step10: Analyze Pure air

Pure air is a mixture and homogeneous as it is a mixture of nitrogen, oxygen, and other gases uniformly distributed.

Step11: Analyze Iron (Fe)

Iron (Fe) is a substance and an element as it is made of only iron atoms.

Answer:

Type of matter	Substance	Mixture
Water ($H_2O$)	Compound
Lucky Charms		Heterogeneous
Salt water		Homogeneous
Nitrogen ($N_2$)	Element
Salt ($NaCl$)	Compound
Rocky road ice - cream		Heterogeneous
Rubbing Alcohol		Homogeneous
Pure air		Homogeneous
Iron (Fe)	Element