Matter, Atoms, and Compounds
In _________ changes the identity of the substance remains unchanged.
What is a physical change?
M, % are units that describe the ratio of the amount of solute to the amount of solution.
What is concentration?
Substances that we start with in a chemical reaction.
What are reactants?
The amount of force applied per unit area.
What is pressure?
The number of wave cycles that move through a point in space in one second.
Found in the nucleus and has no charge.
What is a neutron?
The numerical value of Avogadro's number.
What is 6.02*1023?
The number of atoms of each element is the same in the products as in the reactants.
What is a Balanced Equation?
This law state that volume and pressure are inversely related when temperature and moles are constant in a gas.
What is Boyle's law?
A unit that light energy can be thought of as a "packet" of energy.
What is a photon?
Elements in a vertical column display similar chemical properties are known as a ______ of elements.
What is a group?
the number is used to convert between the mass (grams) and the mole.
What is molar mass?
Daily Double.
Balance the following equation.
Pb(CH3CO2)2 + KI --> PbI2 + KCH3CO2
Gases that behave to predicted linear relationships are known as ________ gases.
The three-dimensional region of space where the electron is likely to be found.
What is an orbital?
Daily Double (you can bid x time the value of the question).
What is the formula for the compound chromium (III) chloride?
Molecules consisting of two atoms in their natural state.
What are Diatomic molecules?
An insoluble ionic compound that does not dissolve in water.
What is a precipitate?
Occurs when the temperature if zero degrees Celsius and one atmosphere of pressure.
What STP (standard temperature and pressure)?
Is the element with the electron configuration 1s22s22s63s23p64s1.
What is potassium?
Ions consisting of two or more atoms usually of more than one element.
What is a polyatomic ion?
This line of elements separates the metals from the non-metals.
What are the metalloids?
Any reaction that involves oxygen molecules as a reactant and the rapidly produces heat as a product.
What is a combustion reaction?
The kinetic molecular theory states that gases are mostly made up of this.
What is space?
The size of an atom is often described by this.
What is atomic radius?