Subatomic Particles
Nuclear Chem
Electrons in Bonding
Solutions
Energy in Reactions
100
The subatomic particle with a mass of nearly 'zero'.
What is the electron?
100
Atoms of the same element that have different masses are known as this.
What are isotopes?
100
The number of dots on a the Lewis Dot Diagram of a neutral carbon atom.
What is 4 dots, :C:?
100
In general, salts dissolve better in _________ temperatures.
What is 'higher'?
100
The unit for energy.
What is 'the Joule (J)'?
200
The subatomic particle that gives an element it's identity.
What is a proton?
200
The number of neutrons present in a Lithium-8 atom.
What is five neutrons?
200
The number of electrons that sodium tends to gain or lose in a chemical reaction:
dotNa
What is 'lose 1 electron'?
200
The molarity of a solution in which 0.5 moles are dissolved in 0.25 L of solution.
What is 2M, "Two Molar"?
200
This quantity describes the amount of heat required to warm 1 gram of a substance by 1 degree Celsius.
What is specific heat capacity (c)?
300
The number of neutrons present in this isotope of oxygen:
What is 7 neutrons?
300
The type of nuclear reaction pictured below:
What is alpha decay?
300
The option below that correctly models Lithium Oxide.
What is Option III?
300
The name for the acid, HCl.
What is hydrochloric acid?
300
The substance (A, B, or C) pictured below that has the highest heat capacity.
What is A?
400
The (neutral) element that is represented by this Bohr model:
What is Nitrogen?
400
The half-life of the americium-239 sample modelled below:
What is 0.5 days?
400
The geometry (shape) of a Boron Trifluoride molecule:
What is trigonal planar?
400
Adding salt to water tends to ________ the freezing point of the water.
What is lower?
400
Energy would appear on the _________ (right/left) side of the chemical equation described by the energy bar charts below:
What is the right?
500
Ionization energy describes the energy required to remove this subatomic particle from an atom.
What is the electron?
500
The type of nuclear reaction in which a large nucleas breaks up into two daughter nuclei.
What is fission?
500
The number of bonding electrons are pictured in the Lewis structure below:
What are 6 bonding electrons?
500
Adding solute tends to ______ vapor pressure by inhibiting evaporation, while have no effect on condensation at the liquid-gas boundary.
What is reduce?
500
Give an example of an endothermic reaction.
Answers vary.