PPT: Materials- Properties and Changes | Year 6 Science IGCSE (Cambridge) - Class 6 PDF Download

 Page 1


Materials: 
Properties and 
Changes
Page 2


Materials: 
Properties and 
Changes
Properties of Substances
A property is something about substance that allows us to tell it apart 
from other substances. This means that each substance has its own 
melting point.
Change of state
Substances change state when heated or cooled sufficiently.
For example, ice melts at 0°C to become liquid water. This is called 
the melting point.
The melting point is a distinctive property of each substance.
Gold has a much higher melting point of 1064°C.
These properties help us distinguish one substance from another.
The boiling point is the temperature at which particles in a liquid gain 
enough energy to become gas.
Pure water boils at 100°C, vinegar at 118°C, and liquid gold at 2856°C.
Page 3


Materials: 
Properties and 
Changes
Properties of Substances
A property is something about substance that allows us to tell it apart 
from other substances. This means that each substance has its own 
melting point.
Change of state
Substances change state when heated or cooled sufficiently.
For example, ice melts at 0°C to become liquid water. This is called 
the melting point.
The melting point is a distinctive property of each substance.
Gold has a much higher melting point of 1064°C.
These properties help us distinguish one substance from another.
The boiling point is the temperature at which particles in a liquid gain 
enough energy to become gas.
Pure water boils at 100°C, vinegar at 118°C, and liquid gold at 2856°C.
Change of state
Properties
Characteristics that allow us to distinguish one substance from another. Each substance has unique 
properties.
Boiling Point
The temperature at which particles throughout a liquid have enough energy to change to a gas. Water 
boils at 100°C.
Melting Point
The temperature at which a solid becomes a liquid. Ice melts at 0°C, while gold melts at 1064°C.
Page 4


Materials: 
Properties and 
Changes
Properties of Substances
A property is something about substance that allows us to tell it apart 
from other substances. This means that each substance has its own 
melting point.
Change of state
Substances change state when heated or cooled sufficiently.
For example, ice melts at 0°C to become liquid water. This is called 
the melting point.
The melting point is a distinctive property of each substance.
Gold has a much higher melting point of 1064°C.
These properties help us distinguish one substance from another.
The boiling point is the temperature at which particles in a liquid gain 
enough energy to become gas.
Pure water boils at 100°C, vinegar at 118°C, and liquid gold at 2856°C.
Change of state
Properties
Characteristics that allow us to distinguish one substance from another. Each substance has unique 
properties.
Boiling Point
The temperature at which particles throughout a liquid have enough energy to change to a gas. Water 
boils at 100°C.
Melting Point
The temperature at which a solid becomes a liquid. Ice melts at 0°C, while gold melts at 1064°C.
Boiling and Evaporation
When a liquid boils, all particles in the liquid gain enough energy to become a gas.
Boiling is different from evaporation, which occurs when only particles on the liquid's surface turn into a gas.
Most liquids need heating to reach a specific temperature to boil.
Evaporation can occur at any temperature, even in cold conditions.
Evaporation happens more slowly compared to boiling.
Page 5


Materials: 
Properties and 
Changes
Properties of Substances
A property is something about substance that allows us to tell it apart 
from other substances. This means that each substance has its own 
melting point.
Change of state
Substances change state when heated or cooled sufficiently.
For example, ice melts at 0°C to become liquid water. This is called 
the melting point.
The melting point is a distinctive property of each substance.
Gold has a much higher melting point of 1064°C.
These properties help us distinguish one substance from another.
The boiling point is the temperature at which particles in a liquid gain 
enough energy to become gas.
Pure water boils at 100°C, vinegar at 118°C, and liquid gold at 2856°C.
Change of state
Properties
Characteristics that allow us to distinguish one substance from another. Each substance has unique 
properties.
Boiling Point
The temperature at which particles throughout a liquid have enough energy to change to a gas. Water 
boils at 100°C.
Melting Point
The temperature at which a solid becomes a liquid. Ice melts at 0°C, while gold melts at 1064°C.
Boiling and Evaporation
When a liquid boils, all particles in the liquid gain enough energy to become a gas.
Boiling is different from evaporation, which occurs when only particles on the liquid's surface turn into a gas.
Most liquids need heating to reach a specific temperature to boil.
Evaporation can occur at any temperature, even in cold conditions.
Evaporation happens more slowly compared to boiling.
Boiling and Evaporation
Boiling
Occurs throughout the 
liquid
Happens at a specific 
temperature
Requires heating
Forms bubbles 
throughout the liquid
Evaporation
Occurs only at the 
surface
Happens at any 
temperature
No heating necessary
No bubble formation