Question

convert word equations into chemical equations
classify each chemical reaction as a synthesis (s), decomposition (d), single displacement or double displacement (dd). then express the word equation as a chemical equation.

1. magnesium + sulfur → magnesium sulfide
2. sodium hydroxide → sodium oxide + water
3. calcium sulfide + hydrogen chloride → calcium chloride + hydrogen sulfide
4. chlorine + strontium iodide → strontium chloride + iodine
5. silver oxide → silver + oxygen
6. calcium hydroxide + hydrogen nitride → hydrogen hydroxide + calcium nitride
7. lithium + silver fluoride → lithium fluoride + silver
8. aluminum chloride + sodium bromide → sodium chloride + aluminum bromide
9. zinc + magnesium phosphide → magnesium + zinc phosphide
10. sodium + oxygen → sodium oxide

Explanation:

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

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

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

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

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: $CaS+2HCl
ightarrow CaCl_2 + H_2S$

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: $Cl_2 + SrI_2
ightarrow SrCl_2+I_2$

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

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

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: $3Ca(OH)_2 + 2HN_3
ightarrow 6H_2O+Ca_3N_2$

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: $2Li+2AgF
ightarrow 2LiF + 2Ag$

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: $AlCl_3+3NaBr
ightarrow 3NaCl + AlBr_3$

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: $3Zn + Mg_3P_2
ightarrow 3Mg+Zn_3P_2$

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

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

Answer:

1. S, $Mg + S

ightarrow MgS$

1. D, $2NaOH

ightarrow Na_2O + H_2O$

1. DD, $CaS+2HCl

ightarrow CaCl_2 + H_2S$

1. SD, $Cl_2 + SrI_2

ightarrow SrCl_2+I_2$

1. D, $2Ag_2O

ightarrow 4Ag + O_2$

1. DD, $3Ca(OH)_2 + 2HN_3

ightarrow 6H_2O+Ca_3N_2$

1. SD, $2Li+2AgF

ightarrow 2LiF + 2Ag$

1. DD, $AlCl_3+3NaBr

ightarrow 3NaCl + AlBr_3$

1. SD, $3Zn + Mg_3P_2

ightarrow 3Mg+Zn_3P_2$

1. S, $4Na + O_2

ightarrow 2Na_2O$