What is the most complete and best description of a covalent bond? - Correct Answer A system of two
nuclei where each atom donates one electron to the other atom, thus forming a bond
What is not a characteristic of ionic substances? - Correct Answer Their reactions are generally
extremely slow.
Characteristics of Ionic Substances - Correct Answer -They conduct an electric current when fused.
-Those having a common ion exhibit some similar chemical properties.
-They lower the vapor pressure of water when dissolved in it.
-They raise the boiling point of water when dissolved in it.
The addition of a catalyst in a chemical reaction - Correct Answer Provides an alternate path with a
different activation energy.
What procedure will lower the activation energy for a particular reaction? - Correct Answer adding a
catalyst
What's an accurate description of the behavior of a catalyst? - Correct Answer A catalyst reduces the
activation energy for a reaction and increases the rate of a reaction.
What exactly do Catalysts do? - Correct Answer Alter the pathway (mechanism) of a chemical reaction.
Which group of ions can exist together in water solution in moderate concentration? - Correct Answer
K+, Cl-, Na+, NO3-
In which process is entropy decreases in what process? - Correct Answer freezing water
, When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number of ions
present will be approximately - Correct Answer Half as great as before
Ion - Correct Answer An atom or group of atoms that has gained or lost one or more electrons, thus
acquiring a charge.
A species of an element in which the number of electrons does not equal the number of protons.
Energy of a photon is greatest in case of a - Correct Answer x-rays.
Photon - Correct Answer A particle of electromagnetic radiation with no mass that carries a quantum of
energy. A discrete amount.
packet of energy whose quantity is related to the frequency of the electromagnetic radiation
Regions of the Electromagnetic Spectrum (from highest frequency to lowest inversely related to
wavelength) - Correct Answer Gamma, X-ray, Ultra-violet, visible light, Infrared, Microwave, Radio
The higher the frequency, the ______ the photon energies. - Correct Answer higher
Elements with ____ ionization readily lose electrons to form positive ions.
high/low - Correct Answer low
Elements with ____ electron affinity ready accept electrons to form negative ions. - Correct Answer
high
TRUE/FALSE
Do these two match up?
low ionization energy + high electron affinity - Correct Answer TRUE.
nuclei where each atom donates one electron to the other atom, thus forming a bond
What is not a characteristic of ionic substances? - Correct Answer Their reactions are generally
extremely slow.
Characteristics of Ionic Substances - Correct Answer -They conduct an electric current when fused.
-Those having a common ion exhibit some similar chemical properties.
-They lower the vapor pressure of water when dissolved in it.
-They raise the boiling point of water when dissolved in it.
The addition of a catalyst in a chemical reaction - Correct Answer Provides an alternate path with a
different activation energy.
What procedure will lower the activation energy for a particular reaction? - Correct Answer adding a
catalyst
What's an accurate description of the behavior of a catalyst? - Correct Answer A catalyst reduces the
activation energy for a reaction and increases the rate of a reaction.
What exactly do Catalysts do? - Correct Answer Alter the pathway (mechanism) of a chemical reaction.
Which group of ions can exist together in water solution in moderate concentration? - Correct Answer
K+, Cl-, Na+, NO3-
In which process is entropy decreases in what process? - Correct Answer freezing water
, When equal volumes of 0.1 M solutions of HCl and NaOH are mixed, the total number of ions
present will be approximately - Correct Answer Half as great as before
Ion - Correct Answer An atom or group of atoms that has gained or lost one or more electrons, thus
acquiring a charge.
A species of an element in which the number of electrons does not equal the number of protons.
Energy of a photon is greatest in case of a - Correct Answer x-rays.
Photon - Correct Answer A particle of electromagnetic radiation with no mass that carries a quantum of
energy. A discrete amount.
packet of energy whose quantity is related to the frequency of the electromagnetic radiation
Regions of the Electromagnetic Spectrum (from highest frequency to lowest inversely related to
wavelength) - Correct Answer Gamma, X-ray, Ultra-violet, visible light, Infrared, Microwave, Radio
The higher the frequency, the ______ the photon energies. - Correct Answer higher
Elements with ____ ionization readily lose electrons to form positive ions.
high/low - Correct Answer low
Elements with ____ electron affinity ready accept electrons to form negative ions. - Correct Answer
high
TRUE/FALSE
Do these two match up?
low ionization energy + high electron affinity - Correct Answer TRUE.
