What can mass not do?
Be created or destroyed
A + B --> AB
Synthesis
What is the mass of the products if you put in 50 grams of one material and 33 grams of another material?
83 grams.
How many reactants does a decomposition reaction have?
1
If the mass of the reactants: NaCl is 191 grams and calcium hydroxide (Ca(OH)2) is 74 grams. Then the mass of the products produced are 80 grams of sodium hydroxide (2 NaOH). What mass of calcium chloride (CaCl2) is produced?
NaCl + Ca(OH)2 🡪 CaCl2 + 2 NaOH
185 grams
What type of reaction?
SnCl2 + Zn -> ZnCl2 + Sn
Single Replacement
I begin a combustion reaction with 100 grams of material and end up with a product of 150 grams of material. Where did the extra mass come from?
Oxygen in the air.
What type of reaction?
KCl + AgNO3 -> KNO3 + AgCl
Double Replacement
If mass increases during a reaction is this endothermic or exothermic?
Exothermic
What are the 2 product in a combustion reaction?
CO2 and H2O