Types of chemical reactions
1.aqueous solutions of barium chloride and silver nitrate are combined. the balanced equation for the reaction that occurs contains which of the following terms?
a.)agcl (aq)
b.)2 agcl (s)
c.)2 ba(no3)2 (aq)
d.)bano3 (s)

2.)sodium metal is added to water. which of the following would be observed in the lab?
a.)a basic solution and bubbles of hydrogen gas.
b.)a neutral solution and bubbles of hydrogen gas.
c.)an acidic solution and bubbles of hydrogen gas.
d.)a basic solution and bubbles of oxygen gas.

3.)when sodium chloride and lead (ii) nitrate react in an aqueous solution, a yellow precipitate is formed. what is the identity of the precipitate?
a.)nacl
b.)pb(no3)2
c.)pbcl2
d.)nano3

4.which of the following metals could not be used to form solid copper from a solution of copper (ii) chloride?
a.)iron
b.)platinum
c.)aluminum
d.)magnesium

5.which of the following would not result in a chemical reaction?
a. sodium hydroxide + iron (iii) chloride
b. silver nitrate + potassium chloride
c. copper (ii) oxide + sodium hydroxide
d. barium nitrate + copper (ii) sulfate

6.a piece of copper wire is added to a solution of silver (i) nitrate. which of the following is the correct balanced equation for this reaction? copper forms +2 ions.
a.)cu (s) + 2 agno3 (aq) → 2 ag (s) + cu(no3)2 (aq)
b)cu (s) + agno3 (aq) → ag (s) + cuno3 (aq)
c.)2 cu (s) + 2 agno3 (aq) → 2 ag (aq) + 2 cu(no3)2 (s)
d.)3 cu (s) + 2 ag3n (aq) → 6 ag (s) + cu3n2 (aq)

7.what is the balanced chemical equation for the reaction that takes place between bromine and sodium iodide?
a.)no reaction will occur between bromine and sodium iodide
b.)br2 + 2 nai → 2 nabr + i2
c.)2 br + nai2 → nabr2 + 2 i
d.)br + nai → nabr + i

8.which of the following is most likely to be an endothermic reaction?
a.)decomposition
b.)combustion
c.)synthesis
d.)single replacement

9.which of the following observations would be true of the chemical reaction below? check all that apply. caco3 (s) + 2hcl (aq) → cacl2 (aq) + h2o (l) + co2 (g)
a.)a precipitate would be formed
b.)the original calcium carbonate solid should become noticeably smaller
c.)bubbles of a gas would be produced. the gas should extinguish a glowing wood splint.
d.)bubbles of a gas would be produced. the gas should ignite a glowing wood splint.
e.)the final solution should be a base