Question

you mix silver nitrate (agno₃) and sodium chloride (nacl) in water. two new compounds, silver chloride (agcl) and sodium nitrate (nano₃), are formed. what type of reaction is this?
single displacement
combining
breaking apart
double displacement
the burning of wood is a chemical reaction that combines wood with oxygen to produce ash, carbon dioxide, and water. this is an example of a ______ reaction.
synthesis
decomposition
combustion
single displacement
in a single displacement reaction, what is always one of the products?
two new compounds
a single new compound
a different element by itself

Explanation:

1. In the reaction of silver nitrate ($AgNO_3$) and sodium chloride ($NaCl$) in water to form silver chloride ($AgCl$) and sodium nitrate ($NaNO_3$), the positive - and negative - ions of the two reactants exchange places. This is characteristic of a double - displacement reaction.
2. The burning of wood, which combines wood with oxygen to produce ash, carbon dioxide, and water, is a combustion reaction as it involves a substance reacting with oxygen and releasing energy in the form of heat and light.
3. In a single - displacement reaction, one element replaces another element in a compound, and one of the products is always a different element by itself.

Answer:

1. Double displacement
2. Combustion
3. A different element by itself