end of semester test: physical science a\nclassify the sentences based on the chemical reactions they…

end of semester test: physical science a\nclassify the sentences based on the chemical reactions they describe\nwhen a clam shell (caco₃) is heated, carbon dioxide (co₂) is given off and a white powder, calcium oxide (cao), forms.\nnitrogen pentoxide (n₂o₅) is an unstable gas that changes to nitrogen dioxide (no₂) and oxygen (o₂) at room temperature.\nsodium (na) reacts with chlorine (cl) to give sodium chloride (nacl).\nzinc (zn) metal reacts with copper sulfate (cu₂so₄) to give zinc sulfate (znso₄) and copper (cu).\na strip of magnesium (mg) burns brightly in oxygen (o₂) to form a white powder, magnesium oxide (mgo).\non heating iron ore (fe₂o₃) with carbon (c), we get iron (fe) and carbon dioxide (co₂).\nsynthesis decomposition replacement

end of semester test: physical science a\nclassify the sentences based on the chemical reactions they describe\nwhen a clam shell (caco₃) is heated, carbon dioxide (co₂) is given off and a white powder, calcium oxide (cao), forms.\nnitrogen pentoxide (n₂o₅) is an unstable gas that changes to nitrogen dioxide (no₂) and oxygen (o₂) at room temperature.\nsodium (na) reacts with chlorine (cl) to give sodium chloride (nacl).\nzinc (zn) metal reacts with copper sulfate (cu₂so₄) to give zinc sulfate (znso₄) and copper (cu).\na strip of magnesium (mg) burns brightly in oxygen (o₂) to form a white powder, magnesium oxide (mgo).\non heating iron ore (fe₂o₃) with carbon (c), we get iron (fe) and carbon dioxide (co₂).\nsynthesis decomposition replacement

Answer

Answer:

Synthesis Decomposition Replacement
Sodium (Na) reacts with chlorine (Cl) to give sodium chloride (NaCl); A strip of magnesium (Mg) burns brightly in oxygen (O₂) to form a white powder, magnesium oxide (MgO). When a clam shell (CaCO₃) is heated, carbon dioxide (CO₂) is given off and a white powder, calcium oxide (CaO), forms; Nitrogen pentoxide (N₂O₅) is an unstable gas that changes to nitrogen dioxide (NO₂) and oxygen (O₂) at room temperature. Zinc (Zn) metal reacts with copper sulfate (CuSO₄) to give zinc sulfate (ZnSO₄) and copper (Cu); On heating iron ore (Fe₂O₃) with carbon (C), we get iron (Fe) and carbon dioxide (CO₂).

Brief Explanations:

Synthesis reactions combine substances (e.g., Na+Cl→NaCl, Mg+O₂→MgO). Decomposition reactions break down compounds (e.g., CaCO₃→CO₂+CaO, N₂O₅→NO₂+O₂). Replacement reactions involve element displacement (e.g., Zn replaces Cu in CuSO₄, C replaces Fe in Fe₂O₃).