Question
What are covalent compounds? Why are they different from ionic compounds? List their three characteristic properties.

Answer

  • Covalent compounds are those compounds which are formed by sharing of electrons between two atoms/ which contain covalent bonds.
  • Covalent compounds are different from ionic compounds because the ionic compounds are formed by the transference of electrons.
  • Three characteristics of covalent compounds:
  1. Generally have low melting and boiling points.
  2. Generally insoluble or less soluble in water but soluble in organic solvents.
  3. Do not conduct electricity.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Name the scientist who gave the theory of origin of life on earth. What is this theory?
Two elements ‘A’ and ‘B’ belong to the $3^{\text {nd }}$ period of Modern periodic table and are in group 2 and 13 respectively. Compare their following characteristics in tabular form:
  1. Number of electrons in their atoms.
  2. Size of their atoms.
  3. Their tendencies to lose electrons.
  4. The formula of their oxides.
  5. Their metallic character.
  6. The formula of their chlorides.
What is feedback mechanism of hormonic regulation. Take the example of insulin to explain this phenomenon.
A convex lens of focal length 6cm is held 4cm from a newspaper which has print 0.5cm high. By calculation, determine the size and nature of the image produced.
What is the maximum number of 60W bulbs that can be run from the mains supply of 220 volts if you do not want to overload a 5A fuse?
A narrow beam PQ of white light is passing through a glass prism ABC as shown in the diagram.

Trace it on your answer sheet and show the path of the emergent beam as observed on the screen DE.
  1. Write the name and cause of the phenomenon observed.
  2. Where else in nature is this phenomenon observed?
  3. Based on this observation, state the conclusion which can be drawn about the constituents of white light.
Five resistors are connected in a circuit as shown. Find the ammeter reading when circuit is closed.
Stomata of desert plants remain closed during the day. Explain how and when they take up $CO _2$ to perform photosynthesis?
Leaves of a healthy potted plant were coated with vaseline. Will this plant remain healthy for long? Give reason for your answer.
What is the action of water on (a) sodium (b) magnesium, and (c) aluminium? Write equations of the chemical reactions involved.