Elements
Chemical Changes
Bonds
Stoichiometry
Thermochemistry
100

What the the element Hydrogen is classified as

What is a Halogen?

100

When one or more substances are changed into new substances is called this

What is a chemical reaction?

100

Forms an Ionic Bond

What is a positive and negative ion?

100

A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction

What is mole ratio?

100

The study of the energy changes in chemical reactions

What is Thermochemistry?

200

Potassium is a __ metal

Alkali

200

When heat is produced, light is emitted, or a precipitate is formed this is an indication of this

What is a chemical reaction/change?

200

Sodium losses an electron

What is Na+?

200

Avogadro's number

What is 6.022 x 10^23?

200

This letter stands for temperature in q = cmΔT

What is T?

300

Nitrogen has a __ Charge

Positive

300

Balance the following chemical equation. You must show all work and simplify your answer. Fe + O2 --> Fe2O3

what is 4 Fe + 3O2 --> 2Fe2O3?

300

Particles formed when atoms share electrons

What is a molecule?

300

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?

300

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?

400

The compound HCl is made up of

what is Hydrogen and Chlorine?

400

When ions from 2 compounds switch places, this type of reaction occurs.

What is a double displacement reaction?

400

A pure substance containing two or more elements

What is a compound?

400

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?

400

The type of reaction with +ΔH

What is an endothermic reaction?

500

The atomic number for Boron

What is 5?
500

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?

500

A hard, crystalline compound composed of positive metal ions and negative non-metal ions

What is an ionic salt?

500

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?

500

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?