Types of Reactions
What is a synthesis reaction
Two or more subframes combine to form one product
Name one sign of a chemical reaction
Color change, temperature change, gas, or precipitate
What are reactants
Starting substances in a reaction
Whaat is made when hydrogen and oxygen react
Water (H2O)
Balance: H₂ + O₂ → H₂O
2H₂ + O₂ → 2H₂O
What is decomposition
One component breaks into two or more substances
What does a color change mean
A new substance is forming
What are products
Substances made in a reaction
Identify the reaction: AB → A + B
Decomposition
Balance: N₂ + H₂ → NH₃
N₂ + 3H₂ → 2NH₃
What type is A+BC→AC+B
Single Replacement
What does gas formation look like ?
Bubbles
What is a chemical equation
A representation of a chemical trance ion using formulas
Identify: AB + CD → AD + CB
Double replacement
Name all 5 reaction types
Synthesis, Decomposition , Single Replacement, Double Replacement, Combustion
What type is AB + CD → AD + CB
Double replacement
What is a precipitate
A solid that forms from liquid reaction
What does “ balanced” mean
Same number of atoms on both sides
Identify: A + B → AB
Synthesis
Give a real life example of combustion
Burning wood, gas, or fuel
What type is burning with oxygen
Combustion
What does temperature change
Energy is released or absorbed
What is the law of conservation of mass
Matter cannot be created or destroyed
Identify: CH4+2O2→CO2+H2O
Combustion
Explain why reactions happen ?
Atoms rearrange to form more stable substances and release or absorb.