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WorksheetsSpecific Latent Heat Physics 4.3 Form 4
Total questions: 45
Worksheet time: 31mins
Three states of element
Solid
Compound
Liquid
Gas
Differences among three states of matter
Size of molecules
Arrangement of molecules
Mass of molecules
Movement of molecules
Which one have a stronger molecular bonds?
Solid
Liquid
Gas
Why the bond between gas molecules is the weakest?
Gas molecules lazy to move
Gas molecules move around each other
Gas molecules vibrate about a fixed positon
Gas molecules move freely at random
The changes in the phase of matter
melting
boiling
freezing
heating
What is the effect of heat is being supplied continually?
Temperature remains constant
Temperature increases
Temperature decreases
What is the meaning of latent heat?
(a)
State two processes that released latent heat without temperature change
Condensation
Boiling
Evaporation
Freezing
State two processes that absorbed latent heat
condensation
melting
freezing
boiling
State two processes that released latent heat
freezing
melting
condensation
boiling
Choose the arrangement of molecules in liquid
Choose the arrangement of molecules in gas
Choose the arrangement of molecules in solid
The quantity of heat needed to change the state of matter of an object depends on
temperature of the object
mass of the object
material of the object
State the definition of specific latent heat
(a)
Diagram shows the formula of specific latent heat, what is Q stands for?
(a)
Diagram shows the formula of specific latent heat, what is m stands for?
(a)
Diagram shows the formula of specific latent heat, what is L stands for?
(a)
What is the formula of latent heat
Quantity of heat devide mass of the object
Quantity of heat multiple mass of the object
S.I. unit for specific latent heat
J kg^-1
M kg^-1
State two types of specific latent heat
Specific of latent heat of kinetic
Specific of latent heat of fusion
Specific of latent heat of vaporisation
State the definition of specific latent heat of fusion
(a)
State the definition of specific latent heat of vaporisation
(a)
Heating curve where an object changes its state
from gas to solid
from solid to liquid
from solid to gas
from liquid to solid
Based on the Kinetic Theory of Matter, what is the relationship of the average kinetic energy of a molecule and the temperature of the object ( use higher/lower )
(a)
Latent heat absorbed during melting and boiling does
not decrease the average kinetic energy of the molecule
not increase the average kinetic energy of the molecule
Melting and boiling occur at constant temperature
constant temperature
increasing temperature
decreasing temperature
What happens when solid is heated until melting point
Heat is absorbed
Heat is released
Temperature increases
Temperature decreases
Kinetic energy of molecules increases
What happens when liquid is heated until boiling point
Heat is absorbed
Temperature increases
Temperature decreases
Kinetic energy of molecules increases
Kinetic energy of molecules decreases
What happens when gas is heated
Heat is absorbed
Temperature increases
Kinetic energy of molecules increases
Solid starts to melt
Q
QR
R
The whole solid has melted
Q
QR
R
Solid is melting
Q
QR
R
Why latent heat is absorbed when melting happens
(a)
What happens to molecules when melting happened
released from their fixed position
separated far from one another
move throughout the liquid
When melting happens kinetic energy of molecules does
not increase
not decrease
melting, boiling, condensation, freezing have constant temperature
true
false
Liquid starts to boil
S
ST
T
Liquid is boiling
S
ST
T
The whole liquid has boiled
S
ST
T
Why latent heat is absorbed when boiling happens
(a)
What happens to molecules when boiling happened
(a)
When boiling happens kinetic energy of molecules does
not increase
not decrease
State two processes involved in heating curve
melting
condensation
freezing
boiling
Cooling curve where an object changes its state
gas to liquid
solid to liquid
gas to solid
solid to gas
