Advertisements
Advertisements
प्रश्न
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.
विकल्प
Molecule
Orbits
Atom
Valency
Radical
उत्तर
Molecule
APPEARS IN
संबंधित प्रश्न
MATCH THE COLUMNAS
| 1. Jpham Dalton | a. Neutrons |
| 2. Atom | b. Model of the atom |
| 3. Chadwick | c.The atomic theory of matter |
| 4. Rutherfrod | d. Positively charged |
| 5. Protons | e. Electricity neutral |
| 6. Nuclear fusion | f. Generator of electricity |
| 7.Gamma -rays | g. High penetrating power |
| h.Energy in sun |
TRUE \ FALSE
Cathode rays are a stream of fast moving particles that travel in random directions.
Fill in the blank:
Atoms are _____
Define: Chemical bond
An atom has 13 protons and 14 neutrons.
How many electrons would be present in this atom ?
What is the usual symbol for (a) and electron (b) a proton, and (c) a neutron?
What are the building blocks of matter ?
How is the size of an atom indicated ?
What value has been given to the mass of this reference atom ?
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
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.
The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus
The basic unit of matter is ______.
Draw the structure of an atom and explain the position of the sub-atomic particles.
In all atoms of an element
The volume occupied by 4.4 g of CO2 at S.T.P ______
Atoms of one element can be transmuted into atoms of other elements by ______
______ is a substance that is made up of three oxygen atoms chemically combined.
The first scientific theory about atoms was given by J J. Thomson.
