C1-atoms elements and compounds Flashcards
1
Q
what are all substances made of?
A
atoms
2
Q
what is a compound?
A
a substance that consists of two or more elements and is chemically bonded
3
Q
what is an ion?
A
a charged particle formed when an atom, or a group of atoms, loses or gains electrons.
4
Q
what is always on the left side of a word equation?
A
reactants
5
Q
what is always on the right side of a word equation?
A
products
6
Q
what is the law of the conservation of mass?
A
no atoms are lost or made during a chemical reaction
