5 Themes (of a Non-literary nature)
In chemistry, we focussed much of our attention on these sub-atomic particles.
What are electrons?
The full range of light is called:_____________
What is the electromagnetic spectrum?
The most electronegative element on the PTE.
What is fluorine?
The type of bond between a metal and a non-metal.
What is an ionic bond?
The statement that matter is neither created nor destroyed in chemical reactions is known as:
What is the Law of Conservation of Mass?
The fact that water is always built out of 2 hydrogen atoms and 1 oxygen atom is an example of this theme of chemistry.
What are whole number ratios?
This model of the atom models electrons as orbiting the nucleus in circular orbits.
What is the Bohr model?
The number of valence electrons in Mg?
What is 2?
Name this molecule: PCl5
What is phosphorus pentachloride?
A reaction is more likely to be spontaneous if this increases?
What is entropy?
Hydrogen bonds between water molecules are an example of this type of force.
What are electrical forces?
This string of terms represents this neutral atom:
1s2 2s2 2p4
What is oxygen?
The trend of atomic radius as you travel from left to right across a period in the PTE?
What is atomic radius decreases?
Ammonia, NH3, dissolves in water because of this property.
What is polarity?
If the sign of this value is negative, you can be certain a reaction is spontaneous.
What is Gibb's free energy?
Give one example of minimizing energy.
many responses... (What is a ball rolling down a hill?)
This is released when an excited electron returns to its ground state.
What is a photon?
The amount of energy required to remove an electron from an atom?
What is ionization energy?
The reason a solution of methanol (CH3OH) does not conduct electricity is that there are none of these:
What are ions?
This is said to happen when the molecules of a liquid transition to the gas phase below the boiling point.
What is evaporation?
In Chemistry, models are developed using this process.
What is the Cycle of Scientific Enterprise?
The equation E= hv/wavelength is known as:
What is Planck's relation?
The father of the periodic table?
Who is Mendeleev?
The total number of valence electrons in H3O+
What is 8?
This process uses a base of known concentration to determine an unknown concentration of an acid.
What is titration?