Physics revision

2. a push or a pull upon an object resulting from the object's interaction with another object
5. objects that have opposite charge ______
6. an example of a non-contact force that an invisible force that pulls objects toward each other
7. electrons are wiped from one object to another
10. charges in an uncharged object are rearranged without direct contact with a charged object
11. everything we see around us everyday is made up of _______
13. objects that have the same charge ____
15. when an object either gains or loses electric charge in the form of electrons
17. total amount of matter in an object and always stays the same
18. the force that acts as the point of contact between two objects (must be touching)

1. invisible force field around a magnet and the Earth
3. electrons move from one object to another through direct contact (touching)
4. Things that you cannot see with the naked eye
8. a force applied to an object by another body that is not in direct contact with it
9. It is a component of an atom
12. the property of attracting certain metals
14. is the force of gravity on an object and can change depending on how much gravity is acting upon an object
16. they orbit around the nucleus of an atom