Advertisements
Advertisements
Question
Select the correct answer to the statement given below:
The smallest particle of a substance – capable of independent existence and which retains the characteristics of the substance.
Options
Molecule
Orbits
Atom
Valency
Radical
Solution
Molecule
APPEARS IN
RELATED QUESTIONS
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
ANSWER IN DETAIL
Enlist the features of Bohr’s model of an atom. How did he correct the Rutherford’s model ?
Write the names of the elements present in the:-
Ammonia
Write the names of the elements present in the:-
Sodium hydroxide
Define: Covalent bond
Who originated the word ‘atom’ ?
An atom has 13 protons and 14 neutrons.
What is the atomic mass of the atom ?
Fill in the following blanks with suitable words :
In water, the proportion of oxygen and hydrogen is .............. by mass.
How many times is a proton heavier than an electron?
Calculate the number of moles in 12.044 × 1025 atoms of phosphorus.
Draw diagrams representing the atomic structures of the following:
- Sodium atom
- Chlorine ion
- Carbon atom
- Oxygen ion
Name the gas that.
Turns moist starch iodide paper blue black.
Define the following term with an example.
Element
The smaller particles found in the atom is called ______.
Define the following term with an example.
Compound
Define the following term with an example.
Metal
The number of atoms present in a molecule is called its ______.
You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Dalton’s atomic theory successfully explained
(i) Law of conservation of mass
(ii) Law of constant composition
(iii) Law of radioactivity
(iv) Law of multiple proportions
The graphite refill used is pencil is made of element called ______.
