English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 7

Define the following term with an example. Non-metal

Advertisements
Advertisements

Question

Define the following term with an example.

Non-metal

Definition
Advertisements

Solution

Non-Metal: Non-metal is an element that doesn’t have the characteristics of metal including, (i.e.) ability to conduct heat or electricity luster or flexibility.

Ex. Carbon Iodine, Sulphur.

shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Matter Around Us - Evaluation [Page 39]

APPEARS IN

Samacheer Kalvi Science - Term 1 [English] Class 7 TN Board
Chapter 3 Matter Around Us
Evaluation | Q V. 4. d. | Page 39

RELATED QUESTIONS

Write the names of the elements present in the:- 

Glucose


Write the names of the elements present in the:-

Acetic acid


Write the names of `"Na"_3"PO"_4` compounds :


Define: Ions


Define: Chemical bond


 Name the particles which revolve around the nucleus.


What are orbits or shells ?


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

What is the mass number of X?


An atom of element E contains 3 protons, 3 electrons and 4 neutrons :
(a) What is its atomic number?
(b) What is its mass number?
(c) Write the electronic configuration of the element E.
(d) State whether element E is a metal or non-metal. Why?
(e) What type of ion, cation or anion, will be formed by an atom of element E? Why
(f) Write the symbol of the ion formed by an atom of element E.
(g) What could element X be?


The electronic configuration of an element Z is 2, 8, 8.
(a) What is the atomic number of the element?
(b) State whether element Z is a metal or a non-metal.
(c) What type of ion (if any) will be formed by an atom of element Z? Why?
(d) What is special about the outermost electron shell of the atom of this element?
(e) Give the name and symbol of element Z.
(f) Name the group of elements to which Z belongs.


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which element will gain electron?


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

Which will form positive ion?


Elements X and Y have 1 and 7 electrons in their outermost shell respectively.

What will be the charge present of the molecule XY after chemical combination?


The electronic structure [configuration] of fluorine can be written as 2, 7. In a similar way give the electronic configuration of phosphorus


The smaller particles found in the atom is called ______.


Atoms of one element can be transmuted into atoms of other elements by ______


Does the solubility of a substance change with temperature? Explain with the help of an example.


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?


Write any two observations which support the fact that atoms are divisible.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×