Answer:
Fluorine
Explanation:
These particles stick in the atoms and make them radioactive.
Well people say the world's going to end soon so people need to find another planet to live on they're thinking about Mars at the moment
A model showing that gases are made from the matter of particles that are too small to see and are moving freely around in space can explain many observations.
Answer:
They allow particles to stay close together.
The attractive forces (bonds) in a liquid are strong enough to keep the particles close together, but weak enough to let them move around each other. For example, Liquids are useful in car brake systems because they flow and cannot be compressed.
Explanation:
Hope this helps :)
