convert word equations into chemical equations\nclassify each chemical reaction as a synthesis (s)…

Explanation:

Step1: Identify reaction type for magnesium + sulfur → magnesium sulfide

Two elements combine to form a compound, it's a synthesis reaction. Chemical equation: $Mg + S\rightarrow MgS$

Step2: Identify reaction type for sodium hydroxide → sodium oxide + water

One compound breaks into two compounds, it's a decomposition reaction. Chemical equation: $2NaOH\rightarrow Na_2O + H_2O$

Step3: Identify reaction type for calcium sulfide + hydrogen chloride → calcium chloride + hydrogen sulfide

The positive - negative ions switch partners, it's a double - displacement reaction. Chemical equation: $CaS+2HCl\rightarrow CaCl_2 + H_2S$

Step4: Identify reaction type for chlorine + strontium iodide → strontium chloride + iodine

One element replaces another in a compound, it's a single - displacement reaction. Chemical equation: $Cl_2 + SrI_2\rightarrow SrCl_2+I_2$

Step5: Identify reaction type for silver oxide → silver + oxygen

One compound breaks into elements, it's a decomposition reaction. Chemical equation: $2Ag_2O\rightarrow 4Ag + O_2$

Step6: Identify reaction type for calcium hydroxide + hydrogen nitride → hydrogen hydroxide + calcium nitride

The positive - negative ions switch partners, it's a double - displacement reaction. Chemical equation: $3Ca(OH)_2 + 2HN_3\rightarrow 6H_2O+Ca_3N_2$

Step7: Identify reaction type for lithium + silver fluoride → lithium fluoride + silver

One element replaces another in a compound, it's a single - displacement reaction. Chemical equation: $2Li+2AgF\rightarrow 2LiF + 2Ag$

Step8: Identify reaction type for aluminum chloride + sodium bromide → sodium chloride + aluminum bromide

The positive - negative ions switch partners, it's a double - displacement reaction. Chemical equation: $AlCl_3+3NaBr\rightarrow 3NaCl + AlBr_3$

Step9: Identify reaction type for zinc + magnesium phosphide → magnesium + zinc phosphide

One element replaces another in a compound, it's a single - displacement reaction. Chemical equation: $3Zn + Mg_3P_2\rightarrow 3Mg+Zn_3P_2$

Step10: Identify reaction type for sodium + oxygen → sodium oxide

Two elements combine to form a compound, it's a synthesis reaction. Chemical equation: $4Na + O_2\rightarrow 2Na_2O$

Answer:

1. S, $Mg + S\rightarrow MgS$
2. D, $2NaOH\rightarrow Na_2O + H_2O$
3. DD, $CaS+2HCl\rightarrow CaCl_2 + H_2S$
4. SD, $Cl_2 + SrI_2\rightarrow SrCl_2+I_2$
5. D, $2Ag_2O\rightarrow 4Ag + O_2$
6. DD, $3Ca(OH)_2 + 2HN_3\rightarrow 6H_2O+Ca_3N_2$
7. SD, $2Li+2AgF\rightarrow 2LiF + 2Ag$
8. DD, $AlCl_3+3NaBr\rightarrow 3NaCl + AlBr_3$
9. SD, $3Zn + Mg_3P_2\rightarrow 3Mg+Zn_3P_2$
10. S, $4Na + O_2\rightarrow 2Na_2O$