Chapter 4 Section 2 Flashcards
0
Q
Nuetron
A
- 0 charge ( neutral )
- 1 amu
- stable or not
1
Q
Protons
A
- +
- 1 amu
- determines the element
2
Q
Electron
A
- negative charge
- who cares
- determines how reactive the element will be
3
Q
Nucleus
A
Positively charged
4
Q
What makes up the nucleus
A
Protons and neutrons
5
Q
Where are the electrons
A
In electric clouds outside the nucleus
6
Q
Whats the atomic number
A
Amount of protons in the atom
7
Q
Same number of protons and different number of neutrons
A
Isotope
8
Q
What is the mass
A
Neutrons + protons
9
Q
Gravity
A
- most familiar force
- acts between all objects all the time
- amount of gravity depends on masses and distance between
- gravity pulls objects
- force of atoms is small due to there small masses
10
Q
Electromagnetic
A
- same charge repel each other
- opposites attract
- holds electrons around nucleus
11
Q
Strong
A
- holds the protons to the nucleus
- strongest force
- keeps nucleus together
12
Q
Weak
A
- helps a neutron turn into a proton or electron
