WorksheetsSorting out materials into groups
Total questions: 15
Worksheet time: 8mins
What are all the things around us made of ?
materials
ingredients
substances
none of the above
How does a material differ from another ?
according to their appearance
Because of their weight
Colour
all of these
What do we call a shiny surface ?
Lustre
Appearance
Metals
Diamond
Which of the following objects do we use to check if an object is lustrous ?
Lustre machine
Sand Paper
Chemical
Microscope
Which of the following is lustrous ?
Gold
wood
Hot Iron
Torch light
Why do some materials lose their lust and appear dull
Because of moisture
Because of air
Both A and B
Because of seasons
When do we first observe the lustre on an object ?
When it is freshly cut
When it is hot
When it is not fresh
When it is hard or soft
Which of the following is the correct definition for hardness
When an object cannot be easily compressed
When we can see clearly
When it is easily compressed
According to its looks
What are the different properties of an object that defines its appearance
Roughness
Lustrous
Smooth
All of these
What is a soluble substance
The substance that completely dissolves in a liquid
The substance that does not dissolve in a liquid
Those substances or materials through which things can be seen clearly
Substance that is dissolved in a solvent .
What is solubility ?
the amount of a given substance that can be dissolved in a certain amount of solvent
the amount of a given substance that cannot be dissolved in a certain amount of solvent
the liquid obtained after a chemical process
none of these
What are the materials that do not allow electricity to pass through them called
Conductors
Good conductors
Electric insulators
insulators
Which process does aquatic plants undergo to use carbon dioxide that is dissolved in water ?
Photosynthesis
Carbon collection
both a and b
None of these
What is the SI unit for matter
kgm3
(kg/m3)
m3
kg/m2
Which is the hardest natural occurring object
Diamond
Iron
Magnet
All of these
