Chemistry Flashcards
1
Q
Evidences of Chemical Reactions
A
- Formation of a gas
- Change in color
- Light or flame
- heat is released or absorbed
- temperature
- precipitate
- Change in physical properties
2
Q
Bonds
A
Ionic
- metal atom donates electron to nonmetal atom
Covalent
- Two nonmetal Atoms share electrons
Metallic
- metallic bonding occurs when a group of metal Atoms shares a cloud of electrons
3
Q
Vocabulary
A
Atom: the smallest particle
Molecule: Two or more Atoms joined
Nucleous: dense area in the Center of Atoms
Element: matter of only one kind of atom
4
Q
Law of conservación of matter
A
- The Atoms Will always be the same, never more or less
