1 Chemical reactions Evidence a chemical RXN has occurred: •Color change •Solid forms (precipitate) •Gas is produced •Heat generated Chemical RXN: •Rearrangement of atoms •Atoms neither created nor destroyed State subscripts • (aq) - dissolved in water • (s) -solid, precipitate • (g) -gas • (l) -liquid Classification of Chemical Reactions H 2 O 2 (l ) MnO 2 " # " " H 2 O (l ) + O 2 (g) Catalyst = substance that speeds up a reaction but is not consumed A + B A B 1. Decomposition Reaction- one reactants yield two or more products General Types of Chemical Reactions 2. Synthesis Reaction- two or more reactants yield one product A + B A B S 8(s ) + O 2(g) " SO 2(g)
4
Embed
topic 3-2 slides - Mr. Tuori's AP & Honors Chemistry€¦ · 3 Single replacement Double replacement 5. Combustion-•A reaction in which a C-containing compound is reacted with molecular
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
1
Chemical reactions Evidence a chemical RXN has occurred:
•Color change
•Solid forms (precipitate)
•Gas is produced
•Heat generated
Chemical RXN:•Rearrangement of atoms
•Atoms neither created nor destroyed
State subscripts• (aq) - dissolved in water
• (s) -solid, precipitate
• (g) -gas
• (l) -liquid
Classification of Chemical
Reactions
!
H2O2 (l )MnO2" # " " H 2O(l ) +O2 (g)
Catalyst = substance that speeds up areaction but is not consumed
A + BA B
1. Decomposition Reaction- one reactants yield two or more products
General Types of Chemical Reactions
2. Synthesis Reaction- two or more reactants yield one product
A + B A B
!
S8(s ) +O2(g) "SO 2(g)
2
A + B C BC A +
•one element replaces another element in a compound
•products are different element and different compound