SET-1
identify the odd one out- table, clove oil, stars, pain
Pain (it is not matter)
What happens to particle movement when a gas cools down?
Kinetic energy reduces and particles come closer
Which state has the least intermolecular space?
Solids
Name a solid that is compressible.
Sponge
What causes solids to have a definite shape?
tight packing
Why do gases exert pressure on container walls?
high Kinetic energy
Which state can conduct electricity only when ionized?
Gas
Which state of matter contains definite volume and is fluid?
Liquids
Explain why liquids are not easily compressible.
Definite volume
Define viscosity and name a liquid with high viscosity.
A fluid's resistance to flow by virtue of its density is called viscosity. sugar syrup, honey
Describe how heating affects liquid particles.
increases kinetic energy, particle move apart faster
How does plasma differ from gas in composition?
Plasma is ionized, charged ions while gas is unionized atoms
What is the state of matter of water at 400 K?
gas or vapour
A scientist records a temperature of -40°C. What is this in Kelvin?
233 K
Name one natural and one artificial example of plasma.
natural-lightning artificial-plasma bulb
A student notes 250 K as the room temperature. Convert to °C.
-23 degree celcius
what phenomenon is attributed to the water shedding during salting of vegetables during pickling?
What process is attributed spreading to spreading of virus during sneezing?
Diffusion
Why don't solids diffuse like gases?
Higher intermolecular forces of attraction between solids
They must be composed of atoms
they must have mass
they must occupy space