Edit Game
Revision on unit 1 (Matter and its construction)
 Delete

Use commas to add multiple tags

 Private  Unlisted  Public



 Save

Delimiter between question and answer:

Tips:

  • No column headers.
  • Each line maps to a question.
  • If the delimiter is used in a question, the question should be surrounded by double quotes: "My, question","My, answer"
  • The first answer in the multiple choice question must be the correct answer.

 Import questions





 Save   20  Close
Electrician uses a screw driver made up of steel iron with a woody handle . why?
Because, steel iron is a good conductor of electricity while the wood is a bad conductor of it.
The only non-metal liquid is ................, while the only metal liquid is ...................
bromine , mercury
Density is the………… of unit volume of the substance, and its measuring unit is …………..
Mass , gm/cm3
Write down the electronic configuration: Ca 20
K = 2 , L = 8 , M = 8 , N= 2
The intermolecular forces are very strong in………. .(H2O , H2 , O2 , Fe)
Fe ( it is a solid)
Equal volumes of different material have different masses . why?
because, they have different densities. ( D = M / V )
Write down the electronic configuration of Al 13 :
K=2 , L =8 , M= 3
.The smallest individual unit of matter which shares in chemical reactions.
The atom
It is the simplest pure form of matter which can’t be analyzed chemically into simpler form by simple chemical method
Element
The motion in molecules is limited in …..……and the inter molecular forces are very weak in .............
limited in iron (solid )and very weak in oxygen (gas)
The volume of a mixture of water (200 cm3) with alcohol (300 cm3) equals ..........................because,........
450 ( less than 500 , because, the alcohol molecules inter or spread in the spaces between water molecules.
When atomic number of an element equals its mass number , this means that there aren't ……in the nucleus of this element.
neutrons ( 1 H 1) ,its mass number = atomic number = 1).
All the following elements are active elements except…… . why? ( 6 C , 1 H , 7N , 18 Ar)
18 Ar , because , (2,8, 8) so its outer energy level is completely filled with 8 electrons and stable or inactive.
. A piece of metal its mass is 25gm and its volume is 10cm3, when it is placed in Water it will............ (Water density 1 gm/cm3)
It will sink (Density of metal = mass /volume = 25 /10 = 2.5 larger than water.)
In an experiment for determining density of a piece of iron, following results were recorded: mass of the piece of iron = 78 gm., The volume of water in cylinder = 90 cm3., volume of water and piece of iron = 100 ,Density of Fe=.......
Volume of iron = 100 - 90 =10 and density of iron = Mass / volume = 78 /10 =7.8 gm/cm3
It is very hard to fragment a piece of iron with your fingers. why?
Because , iron is a solid which has very strong inter molecular forces and tiny inter molecular spaces
Balloons of festivals filled with helium rise upwards due to the …. ........
density of helium is less than density of air.
Mention the kind of each matter of the following figures (element or compound) giving the reason .(H2 , H2O, O2 , HCl , Cl2) ,
H2 element because, its molcule consists of similat atoms , H2O compound because , it consists of different atoms , O2 is element , HCl is compound ,
.No. of protons = ……. , Number of electrons =....,number of neutrons=................for Cl 17 ( (mass number = 35)
Mass number = P + n (17 protons , 17 electrons , 18 neutrons)
Density is the………… of unit volume of the substance, and its measuring unit is …………..
mass, gm/ cm3
Your experience on this site will be improved by allowing cookies.