0
Energy in the form of heat must be added to the water.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
To calculate the energy released within a calorimeter the volume temperature change and specific heat capacity of water must be known is this true or false?
that will be true
Is it true that the temperature must drop lower than 0 Celsius for water to freeze when a solute is dissolved in the water?
Yes if something is dissolved in the water then it is no longer pure water and the freezing point will change
What is true about fluctuating water levels?
sign of change
Anythin that causes change must have energy. T or F?
true
Is it true In order to produce a current there must be a change of the magnetic field?
no
True or false would the volume of water be the same before and after a physical change?
True
Water can change from one state to one state to another true or false?
True.
Does salt affect how water evaporates?
yes well kindof in a way because it mostly depends on temperture of the liquid
When water changes to steam it undergoes a chemical change true or false?
No. It is still water. So that makes it a physical change.
What is true about all physical change that involving a change of state?
They are the same substance, just in a different state. Ex: water>ice>water vapor is still water.
It is NOT true that during the water cycle?
Correct Answer is: Living organisms MUST be involved.
How many Btus are required to change one pound of water at 40F to 200F?
160 btu's. It takes 1 btu (British Thermal Unit) to change the temperature of 1lb of water 1°. This is referred to as sensible heat. This 1 to 1 ratio does not hold true when changing the state of that water to ice or to steam. Changing the state 1lb of water at 212° to 1lb of steam at 212° you must add 970 btu's and to change 1lb of water at 32° into 1lb of ice at 32° you must add 144 btu's. This is referred to as latent heat.
