2. identify each of the common items below as an element, a compound or a mixture. their chemical formulas…
2. identify each of the common items below as an element, a compound or a mixture. their chemical formulas have been given to help you out. .25 point each\na. sugar (c₆h₁₂o₆)\nb. phosphorus (p₄)\nc. battery acid (h₂so₄)\nd. air (n₂ & o₂ & ar & co₂...)\ne. oxygen (o₂)\nf. milk (c₁₂h₂₂o₁₁ & h₂o & c₅₀h₁₀₂o₃...)\ng. gold (au)\nh. granite (sio₂ & kalsi₃o₈ & k₂si₃o₈...)\ni. drain cleaner (al & naoh & ...)\nj. sodium (na)\nk. water (h₂o)\nl. salt water (nacl & h₂o)
Answer
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 mixture is a combination of two or more substances that are not chemically combined.
Step2: Analyze Sugar ($C_6H_{12}O_6$)
It is made of carbon, hydrogen, and oxygen atoms chemically combined, so it is a compound.
Step3: Analyze Phosphorus ($P_4$)
It is made of only phosphorus atoms, so it is an element.
Step4: Analyze Battery Acid ($H_2SO_4$)
It is made of hydrogen, sulfur, and oxygen atoms chemically combined, so it is a compound.
Step5: Analyze Air ($N_2$ & $O_2$ & $Ar$ & $CO_2$...)
It is a combination of different gases not chemically combined, so it is a mixture.
Step6: Analyze Oxygen ($O_2$)
It is made of only oxygen atoms, so it is an element.
Step7: Analyze Milk ($C_{12}H_{22}O_{11}$ & $H_2O$ & $C_{50}H_{10}2O_3$...)
It is a combination of different substances not chemically combined, so it is a mixture.
Step8: Analyze Gold (Au)
It is made of only gold atoms, so it is an element.
Step9: Analyze Granite ($SiO_2$ & $KAlSi_3O_8$ & $K_2Si_3O_{10}$...)
It is a combination of different substances not chemically combined, so it is a mixture.
Step10: Analyze Drain cleaner (Al & NaOH & ...)
It is a combination of different substances not chemically combined, so it is a mixture.
Step11: Analyze Sodium (Na)
It is made of only sodium atoms, so it is an element.
Step12: Analyze Water ($H_2O$)
It is made of hydrogen and oxygen atoms chemically combined, so it is a compound.
Step13: Analyze Salt water ($NaCl$ & $H_2O$)
It is a combination of salt and water not chemically combined, so it is a mixture.
Answer:
A. Compound B. Element C. Compound D. Mixture E. Element F. Mixture G. Element H. Mixture I. Mixture J. Element K. Compound L. Mixture