Unit B Matter And Chem Change 2.0 Vocab Flashcards
1
Q
Alchemy
A
People who worked in chemistry and magic
2
Q
Atom
A
The smallest thing on earth that makes up everything on earth
3
Q
Electrons
A
Negative charge in an Atom
4
Q
Nucleus
A
The centre of the Atom
5
Q
Electron shells
A
The orbit of the electron
6
Q
Protons
A
A positive charge in the atom
7
Q
Neutrons
A
The neutral charge in an atom
8
Q
Atomic mass
A
The mass of one item in an element calculated by the number of protons electrons and neutrons
9
Q
Period
A
Horizontal rows in the periodic table
10
Q
Group
A
Vertical rows in the periodic table
11
Q
Atomic number
A
Number of protons in the nucleus
12
Q
Atomic mass unit
A
Measure of atomic mass one atomic mass is equal to one 12th of the mass of a Carbon 12 Atom
13
Q
Mass number
A
The sum of the number of protons and neutrons in and Atom
14
Q
Radioactive
A
An energy
15
Q
Metals
A
Metals
