When gasses are heated the average velocity (speed) of the gas particles decreases.
true
false

Drive down any three characteristic of modern periodic table

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?