Worksheets1.3 Using the particle model
Total questions: 11
Worksheet time: 6mins
Dry ice can keep vaccines ....................................................
colder than -70 °C.
warmer than 70 °C.
at 70 °C.
warmer than -70 °C.
Why does dry ice in the gas state spread out and take the shape of its container?
The particles are far apart
The particles move around
The particles are arranged in fixed positions
The particles hold together strongly
Different parts of the particle model explain different properties.
True
False
The shape of the liquids changes, because the particles ...........................................
The particles are arranged in fixed positions.
mass are identical.
can vibrate on the spot.
can move around.
Firefighter's cylinder is filled with an amount of .....................................to support him for several hours.
nitrogen
chlorine
oxygen
carbon dioxide
Why can all substances in the gas state be compressed or squashed?
The particles are arranged in fixed positions.
The particles are far apart.
The particles hold together strongly.
The particles move around.
What is a vacuum?
A space with particles that are very close together.
A space with no particles.
A space with particles that are far apart.
A space with particles that hold together strongly.
Why can a substance flow in its liquid and gas states but not in the solid state?
The particles are far apart.
The particles are arranged in fixed positions.
The particles hold together strongly.
The particles move around.
Dry ice chemical name is ...................................... in the solid state.
carbon trioxide
calcium dioxide
carbon dioxide
carbon monoxide
Dry ice in the gas state spreads out and mixes with the air, and takes the shape of its container because:
(choose two answers)
The particles move around.
The particles are arranged in fixed positions.
The particles hold together strongly.
The particles do not hold together strongly.
Dry ice shape and size of each lump do not change, if it is kept cold because:
(choose two answers)
The particles are arranged in the same colour.
The particles are arranged in fixed positions.
The particles move around.
The particles hold together strongly.
