No student devices needed. Know more
20 questions
Phase changes are examples of ... changes
chemical
biological
physical
Physical changes can be reversed by adding or removing energy.
true
false
What is happening at the boiling point?
liquid to gas
solid to liquid
gas to liquid
liquid to solid
This picture shows the particles of ..........
gas
liquid
solid
The temperature at which a substance changes states from a solid to a liquid
Freezing point
Melting point
Evaporation
Condensation
The boiling point is the temperature at which a substance changes from a liquid to a gas.
false
true
All substances have the same melting and boiling points
false
true
Which of this can water be turned into
liquid
solid
gas
all of the above
What is water's freezing point?
100 C
0 C
32 C
5 C
Human body normal temperature is around...
27 0 C
370 C
400 C
mercury at 25oC
solid
liquid
gas
iron at 3000oC
solid
liquid
gas
water at -1oC
solid
liquid
gas
oxygen at 0oC
solid
liquid
gas
water at 110oC
solid
liquid
gas
mercury at -50oC
solid
liquid
gas
Explore all questions with a free account