They either stick to each other, nothing happends, or they melt.
Air masses
History often shapes the culture by causing people to come in contact with other cultures. When this happens, the cultures are changed because of that contact.
CFC's when come in contact with ozone deplete it. It reacts with it and decomposes it.
Opposite charges attract each other due to the electric force. When they come in contact, electrons from the negatively charged object will transfer to the positively charged object until both objects are neutral.
If like magnetic forces come in contact with each other, they will repel each other. This is because like magnetic poles (such as north and north, or south and south) create a force that pushes them apart.
they stop growing
The anaconda puts the squeeze on you.
In space, when two pieces of metal touch, they can bond together due to a process called cold welding. Without the presence of air or moisture in the vacuum of space, the metal surfaces can come into intimate contact and form a strong bond.
If you come in contact with high speed electrons from an electron gun, you will get an electrical shock.
al of you are weirdos
the nail goes to the magnet
If you come in contact with a moshling all you have to do is tap on it