30 Questions
What is Avogadro's number?
The number of atoms, molecules, formula units or ions present in one mole of the element, a compound or an ionic substance.
What is physical chemistry?
One of the major branches of chemistry that deals with the physical principles underlying chemical reactions and transformations.
What is empirical formula?
The formula of a substance which gives the simple ratio of the elements present in the molecule of a substance.
What is a gram atom of an element?
The atomic mass of an element expressed in grams.
What is a heteronuclear diatomic molecule?
A molecule consisting of two atoms of different elements.
What is a homonuclear diatomic molecule?
A molecule consisting of two atoms of the same element.
What percentage of the universe is made up of plasma?
99%
Who identified plasma in 1979?
William Crooker
What is the unit of the gas constant in the general gas equation?
J/mol·K
What is the equation for the density of an ideal gas?
d = RT
According to Dalton's Law of Partial Pressures, what is the expression for PA?
XA Pt
What is the equation for the compressibility factor of a gas?
Z = PV/RT
What is the term for atoms of the same element that have the same atomic number but different mass numbers?
Isotopes
What is the technique used to separate gas molecules based on their mass to charge ratio?
Mass Spectrometry
What type of motion do particles of a solid exhibit?
To and fro motion
What is the term for molecules with high molar masses, usually more than 10,000?
Macromolecule
What is the characteristic of interfacial angles of a crystal?
They are always the same irrespective of the size of the crystal
What is the graphical representation of the masses and relative abundances of molecular ions and positively charged fragments?
Mass Spectrum
What is the term used to describe the phenomenon where a substance exhibits different physical properties in different directions?
Anisotropy
What is the term used to describe the phenomenon where an element exists in different physical forms?
Allotropy
What is the term for atoms that have the same number of neutrons?
Isotones
What is the volume of one mole of an ideal gas at standard temperature and pressure?
22.414 dm3
What is the minimum information required to define a unit cell?
Six unit cell dimensions
What is the characteristic of the bonds in ionic solids?
Non-directional
What is the vacant space in a crystal structure due to the circular shape of atoms and molecules called?
Interstices
Which phenomenon occurs when two different substances exist in the same crystalline form?
Isomorphism
What are the dimensions and angles of a unit cell called?
Lattice Constants
What is the energy released when one mole of an ionic crystal is formed from gaseous ions?
Lattice Energy
What is the property of metals that allows them to be converted into thin sheets?
Malleability
What is the force of attraction that binds positive metal ions due to the presence of free electrons?
Metallic Bonds
Test your knowledge of Avogadro's number, its value, and the different branches of chemistry, including physical, organic, bio-chemistry, and more. Learn the basics of chemistry and its applications.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
