Atoms, Elements And Compounds Flashcards
1
Q
Atom
A
The smallest particle of an element that can exist
Atoms cannot be created or destroyed
2
Q
Element
A
Contain only one type of atom
3
Q
Compound
A
Substance that is made of two or more type of atoms that have chemicals reacted
4
Q
O
A
Oxygen
5
Q
Cl
A
Chlorine
6
Q
Na
A
Sodium
7
Q
Fe
A
Iron
8
Q
Electron
A
Is on the outer shell
9
Q
Neutron
A
On the nucleus
10
Q
Proton
A
Nucleus
11
Q
What is a chemical formula of a substance
A
Tells you the number of atoms of each element or the ratio of atoms of each element in the compound
PCL3 - phosphorus chloride
NaCl - sodium chloride
12
Q
Chemical formula symbols start with a
A
Capital letter. The second letter if they have one is a small letter
