Base Of Chemistry Flashcards
3 points required to be a matter
Occupy space, have mass, can b sensed
What are the two types of smell
Odour, fragrance
Which G/g is “acceleration is due to gravity”
Small “g”
Name the ability which is the ability to maintain its shape without deforming…..with other name with example
Rigidity…. stiffness or resistance,,, adanemt. Eg, glass, plastic
The ability in which an object breaks into pieces when force is applied. With eg
Brittle. Eg, glass
The ability opposite to brittle is called
Strong
What is strong
The resistance against permanent deformation
What is hardness
The ability to resist scratches
What is a physical quantity
Magnitude X unit…….it’s a variable but unit is fixed
How many base quantities and Si base units are there
7
What are the seven base quantities
Length l, mass m, time t, electric current I, thermodynamics temperature T, amount of substance n, luminous intensity lv
How many Si derived units are there
22
What is the SI unit of mass
Kilogram
What is the full form of NIST
National Institute of Standard and Technology
Who and when coined the name atomos and what does it mean
Democritus 400bc, unbreakable
Which teacher gave the name atom
Jhon Delton
Name 3 atomic model
Bohr’s atomic model, Rutherford atomic model, quantam amechanical model
1st atomic model and who proposed
J.J. Thomson, plum pudding model
Mass of electron proton neutron
9.1×10-³¹ ….., 1.67×10-²⁷kg
How are the shells of atom are named
K L M N O P
What’s the formula of number of electrons in a shell
2n²
Who coined the name element
Robert Boyle
Who is known as the father of modern Chemistry
Antoine Laurent Lavoisier
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Two types of atomic element
Monoatomic, polyatomic.
Molecule means
Chemical species containing 2 or more atoms chemically bonded to each other
What are the two types of ions
Cations+, anion -
Classify cations on the basis of charge
Monovalent cations, divalent, trivalent,
Which kind of valency does copper contain
Variable valency
Classify ions on the basis of number of atoms
Monoatomic ions and polyatomic ions
