English

Fill in the Blank an Excess of Electrons Produces a ...................... Charge.

Advertisements
Advertisements

Question

Fill in the blank

An excess of electrons produces a ________ charge.

Fill in the Blanks
Advertisements

Solution

An excess of electrons produces a negative charge.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Atomic Structure - Additional questions

APPEARS IN

S.P. Singh Concise Chemistry [English] Class 7 ICSE
Chapter 4 Atomic Structure
Additional questions | Q 23.5

RELATED QUESTIONS

Why is it not possible to see an atom with naked eyes?


Tick the most appropriate answer.

Who discovered that radioactive rays are given out by uranium?

  1. Henri Becquerel
  2. Marie Curie
  3. Pierre Curie
  4. Schmidt

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.


WRITE SHORT ANSWER

Define an ionic compound.


 Give the charge and the mass of an electron, proton and neutron present in an atom ?


Name two particles found inside the nucleus. What are they collectively called ?


A certain particle ‘X’ has 17 protons, 18 electrons and 20 neutrons.

What is the charge on the particle ?


Fill in the blank

An _______ is electrically neutral.


Name the unit in which the radius of an atom is usually expressed.


One nm is equal to :


What is the contribution of the following in atomic structure?
Maharshi Kanada


Rewrite the given sentence in correct form.

Elements contain two or more kind of atoms and compounds contain only one kind of atom.


State true or false. If false, correct the statement.

The basic unit of an element is molecule.


Define – Atom.


Which of the following statements made by Dalton has not undergone any change?


An element is composed of ______ atoms.


The volume occupied by 1 mole of a diatomic gas at S.T.P is ______


A sample of vitamic C is known to contain 2.58 ×1024 oxygen atoms. How many moles of oxygen atoms are present in the sample?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×