in the earth's atmosphere is made up about approximately 78 percent nitrogen and 21 percent oxygen.
Answer:
part b is the right answer
Explanation:
The amount of the gravitational force doubles
If you’re trying to figure out if it’s true or false it’s true
Answer:
francium
Explanation:
The most expensive natural element is francium, but it decays so quickly it can't be collected to be sold.
Heat creates energy... the atoms move faster and faster, which changes the state of matter.
for example:
if a solid is heated, it turns to a liquid
if a liquid is heated, it turns to a gas
hope this helps?