Chem Unit 2 Types Of Reactions Synthesis And Single Displacement Flashcards
Synthesis is when
2 or more substances react to produce a single new substance
A + B = AB
During Synthesis reactions
Reactants collide, break existing bonds between their atoms, and form new bonds
Non- Metal (acidic) oxides are when…
compounds that form when a non-
metal bonds to oxygen
Acids are…
-compounds that produce hydrogen ions
- dissolves in water, forming a solution
- conducts electricity, tastes sour, turns
litmus paper red, and has a pH less than 7
Acids are compounds that…
start with hydrogen and end in a non-metal or a polyatomic ion (exception: water)
Non-metal oxides will…
combine with water to form acids
Metal (basic) oxides are…
solid compounds formed when a metal bonds to oxygen
- bases are compounds that
contain the hydroxide ion
Bases are…
compound that produces hydroxide
ions
-dissolved in water, forming a solution that conducts electricity, tastes bitter, turns litmus paper blue and is above 7 on the pH scale
Metal oxides will…
combine with water to form
bases
A basic oxide will
react with an acidic oxide
to form a salt containing an oxyanion
A singe displacement reaction is when…
A single element replaces a second element in a compound.
A + BC = B + AC
During single displacement metals always _____ & non metals always____
Metals always replace metals
Non-metals always replace non-metals
During single displacement a metal can also replace hydrogen if…
hydrogen is in acid form (example: HCl(aq))
During single displacement Metals can also react with…
water
- when this happens, treat water as the H+ ion and the OH- ion to figure out the products)
Activity series is…
A list of metals (and hydrogen) arranged in specific order
of reactivity, and used to predict whether single displacement reactions occur or not
-The most reactive metals are at the top, and least reactive at the bottom
