Science unit 3 revision

What is the boiling point of water in Fahrenheit?

• 212°F

• 32°F

• 100°F

• 212K

Is the melting point of ice equals to the freezing point of it? And what is it in degrees Celsius?

• Yes, and it is 32°C

• No, and it is 32°C

• Yes, and it is 0°C

• No, and it is 0°C

0°C is the:

• Melting point of ice

• Boiling point of water

• Freezing point of tungsten

• Freezing point of ice

What is the boiling point of water in degrees Kelvin?

• 0K

• 373K

• 212K

• 32°F

Filaments of light bulbs use the metal with the very high melting point is:

• Calcium

• Water vapor

• Carbon dioxide

• Tungsten

What is the boiling point of water in degrees Fahrenheit?

If we add salt into boiling water, will the temperature of the water change?

• Yes, it changes but the temperature will increase

• Yes, it changes but the temperature will decrease

• It won't change, and still 100°C (212°F, 373K)

• The water explodes because it is too hot when it increases

When a solid melts, what happens to the particles?

• They gain more energy and have enough energy to separate, then the solid begins to melt to it's liquid form

• They gain too much energy and breaks itself into 1/2 of it

• The particles gain much energy and sublimates to a gas

• Nothing happens

The opposite of melting is...

• Opposite

• Sublimation

• Melting

• Freezing

Fill in the blank:

When freezing happens, the particles of the liquid ... energy and becomes a...

• gain/liquid

• gain/solid

• lose/gas

• lose/plasma