Chemistry Categories
A process that releases heat to the surroundings
Rows in the periodic table that correspond to the number of energy levels in the elements.
What are periods?
Two or more chemically-bonded elements.
What is a Compound?
1.) Formed when an electron transfers from one atom to another. 2.) Formed when two atoms share one or more electrons
What are Ionic and Covalent Bonds?
The relationship between the moles of one substance and the moles of different substance in a balanced chemical equation.
What is the mole ratio?
Three indicators of a chemical reaction.
What is a color change, gas released, change in energy and or precipitate forms?
Number of protons in the Nucleus.
What is The Atomic Number?
A molecule that has a slightly negative region and a slightly positive region because the electrons are shared unequally.
What is a polar molecule?
The molar mass of water.
What is 18 g?
A formula giving the smallest whole number ration of elements in a compound.
What is Empirical Formula?
This is when a solid goes into a gas without first becoming a liquid.
What is sublimation?
The number that describes the sum of the Protons plus Neutrons in the Nucleus.
What is The Atomic Mass?
Balance: KMnO4 + HCl = KCl + MnCl2 + H2O + Cl2
2 KMnO4 + 16 HCl = 2 KCl + 2 MnCl2 + 8 H2O + 5 Cl2
Three ways to increase the rate of a reaction.
What is increase temperature, surface area, concentration, agitation and add a catalyst?
A state in which opposing forces or influences are balanced.
What is Equilibrium?
A substance physically combined that has no definite proportion and the particles are visible to the naked eye such as sea water.
What is a Heterogeneous Mixture?
Elements in the same column of the periodic table have this in common.
What are number of valence electrons?
An ideal gas law where at constant temperature, the volume of an ideal gas is inversely proportional to its absolute pressure.
What is Boyles Law?
Three conditions that must be met for a reaction to occur.
What are particles need to come in contact with enough energy and proper orientation?
All compounds containing Carbon and hydrogen (Which is Pretty much everything Living)
What is Organic Compounds?
Beryllium, Magnesium, Calcium, Strontium, Barium, Radium are all members of this.
What are Alkaline Earth Metals?
In the following reaction,
N2 + 3 H2 <-> 2 NH3 + -1.24 KJ/mol
when the temperature of the reaction is increased.
What is the equilibrium shifts to the left, towards the reactants?
In the reaction,
Zn + CuSO4 --> ZnSO4 + Cu
Cu is this type of agent.
What is oxidizing agent?