Elements
What the the element Hydrogen is classified as
What is a Halogen?
When one or more substances are changed into new substances is called this
What is a chemical reaction?
Forms an Ionic Bond
What is a positive and negative ion?
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
What is mole ratio?
The study of the energy changes in chemical reactions
What is Thermochemistry?
Potassium is a __ metal
Alkali
When heat is produced, light is emitted, or a precipitate is formed this is an indication of this
What is a chemical reaction/change?
Sodium losses an electron
What is Na+?
Avogadro's number
What is 6.022 x 10^23?
This letter stands for temperature in q = cmΔT
What is T?
Nitrogen has a __ Charge
Positive
Balance the following chemical equation. You must show all work and simplify your answer. Fe + O2 --> Fe2O3
what is 4 Fe + 3O2 --> 2Fe2O3?
Particles formed when atoms share electrons
What is a molecule?
How many moles of aluminum atoms are needed to combine with 1.58 mol of oxygen molecules to make aluminum oxide?
What is 2.1 mol Al?
This is the change in heat content of the system when a 100 g sample of steam at 110oC is cooled to 100 oC
What is 1.84 kJ?
The compound HCl is made up of
what is Hydrogen and Chlorine?
When ions from 2 compounds switch places, this type of reaction occurs.
What is a double displacement reaction?
A pure substance containing two or more elements
What is a compound?
Sodium hydroxide reacts with sulfuric acid (H2SO4; MM=98.1 g/mol) to form water and sodium sulfate. How many grams of sodium sulfate (MM=124 g/mol) will be formed from 200 g NaOH (MM=40 g/mol) and an excess of sulfuric acid?
What is 355 g Na2SO4?
The type of reaction with +ΔH
What is an endothermic reaction?
The atomic number for Boron
Balance the following equation. Be sure to show all work and simplify your answer. (NH4)3PO4 + Mg(NO3)2 --> Mg3(PO4)2 + NH4NO3
what is 2(NH4)3PO4 +3Mg(NO3)2 --> Mg3(PO4)2 + 6NH4NO3?
A hard, crystalline compound composed of positive metal ions and negative non-metal ions
What is an ionic salt?
6CO2 +6H2O --> C6H12O6 + 6O2 How many moles of carbon dioxide are needed to react with 3.25 mol of water in the reaction described above?
What is 3.25 mol CO2?
You have a sample of H2O with a mass of 23.0g at a temperature of -46.0ºC. How many kilojoules of heat energy are necessary to heat the ice to 0ºC
What is the 2.2 kJ?