Matter, Atoms, and Compounds
Chemical composition
Stoichiometry
Gaseous State
Electron structure
100

In _________ changes the identity of the substance remains unchanged.

What is a physical change?

100

M, % are units that describe the ratio of the amount of solute to the amount of solution.

What is concentration?

100

Substances that we start with in a chemical reaction.

What are reactants?

100

The amount of force applied per unit area.

What is pressure?

100

The number of wave cycles that move through a point in space in one second.

What is frequency?
200

Found in the nucleus and has no charge.

What is a neutron?

200

The numerical value of Avogadro's number.

What is 6.02*1023?

200

The number of atoms of each element is the same in the products as in the reactants.

What is a Balanced Equation?

200

This law state that volume and pressure are inversely related when temperature and moles are constant in a gas.

What is Boyle's law?

200

A unit that light energy can be thought of as a "packet" of energy.

What is a photon?

300

Elements in a vertical column display similar chemical properties are known as a ______ of elements.

What is a group?

300

the number is used to convert between the mass (grams) and the mole.

What is molar mass?


300

Daily Double.

Balance the following equation.

Pb(CH3CO2)2 + KI --> PbI2 + KCH3CO2

300

Gases that behave to predicted linear relationships are known as ________ gases.

What is Ideal?
300

The three-dimensional region of space where the electron is likely to be found.

What is an orbital?

400

Daily Double (you can bid x time the value of the question).  

What is the formula for the compound chromium (III) chloride?

400

Molecules consisting of two atoms in their natural state.

What are Diatomic molecules?

400

An insoluble ionic compound that does not dissolve in water.

What is a precipitate? 

400

Occurs when the temperature if zero degrees Celsius and one atmosphere of pressure.

What STP (standard temperature and pressure)?

400

Is the element with the electron configuration 1s22s22s63s23p64s1.

What is potassium?

500

Ions consisting of two or more atoms usually of more than one element.

What is a polyatomic ion?

500

This line of elements separates the metals from the non-metals.

What are the metalloids?

500

Any reaction that involves oxygen molecules as a reactant and the rapidly produces heat as a product.

What is a combustion reaction?

500

The kinetic molecular theory states that gases are mostly made up of this.

What is space?

500

The size of an atom is often described by this.

What is atomic radius?