When a solid turns into a liquid.
What is melting?
This gas rises in air.
What is Helium?
When a liquid turns into a solid.
What is freezing?
this liquid is H2O.
What is water?
O is the symbol for this element.
What is Oxygen?
The freezing point of water.
What is 32° Fahrenheit or 0° Celsius?
Our atmosphere is made up of these percentages of these two gases.
What is 78% Nitrogen and 21% Oxygen?
This solid is strong, dense, and is a good conductor of electricity and heat.
What is metal?
The boiling point of water
What is 212° Fahrenheit or 100° Celsius
Xe is the symbol for this element.
What is Xenon?
these are natural solids formed through many geological processes under high pressures.
What are minerals?
The densest liquid.
What is Mercury?
This is the ideal gas.
What is Helium?
The melting point of steel
What is 2500o Fahrenheit or 13710 Celsius?