Potassium sulfate is a white solid. It dissolves to give a colourless solution. The boiling point of the soltuion is 107°C. What happens when a liquid boils?
Once the solution reaches its boiling point the liquid will turn to gas.
Potassium sulfate is a white solid. It dissolves to give a colourless solution. The boiling point of the soltuion is 107°C. Calculate the difference between the boiling point of the solution and the boiling point of pure water.?
7°C
The process of changing liquid to gas naturally is called ____________.
evaporation
The unnatural process of changing liquid to gas is called ____________.
boiling
The process of changing gas to liquid is called _________.
condensation
The process of changing liquid to solid is called ___________.
freezing
Orange juice is stored in plastic bottles. Plastic is insoluble in water. What does insoluble in water mean?
Plastic is impossible to dissolve (mix) in water.
Mike adds 1g of sugar to 100cm3 of water. He stirs the mixture. What does he observe?
The sugar dissolves into the water to make a solution.
Mike adds 1g of salt to 100cm3 of water. He stirs the mixture. It is a solution. What colour is the solution?
Clear
Which moon is waxing gibbous?
D
Which moon is waning crescent?
H
In order to see, where does the light inside our eyes need to meet?
At the focal point
A _________ lens makes objects look larger and farther away.
convex
A _____________ lens makes objects look smaller and closer.
concave
What measuring apparatus can be used to measure mass?
scale
What measuring apparatus can be used to measure weight?
forcemeter
