WARM UPS
3.21.2013
- Matter is anything that has mass and takes up space.
- Matter is made up of particles(atoms).
- No, you can't.
3.22.2013
Atomic #: 4
Atomic mass: 9
Element: Beryllium
Protons: 4
Neutrons: 5
Electrons: 4
Atomic mass: 9
Element: Beryllium
Protons: 4
Neutrons: 5
Electrons: 4
3.25.2013
Atomic # : 10
Atomic Mass: 20
Name of Element: Neon
Atomic Mass: 20
Name of Element: Neon
3.26.2013
![Picture](/uploads/1/3/4/6/13460663/156831534.gif?168)
Argon
18
Ar
39.9
18
Ar
39.9
3.27.2013
3.28.2013
1. An atom of sodium.
2. No
3. Positive ion.
2. No
3. Positive ion.
4.1.2013
4.4.2013
Sulfur
6 valence electrons
No and it will form a negative ion
Beryllium
6 valence electrons
No and it will form a negative ion
Beryllium
4.5.2013
- Magnesium
- 4 electrons. No. Silicon
4.8.2013
Nitrogen
No
Boron
No
Boron
4.15.2013
C
4.29.2013
Oxygen is not stable.
4.30.2013
7 atoms. 6 atoms.
3 elements in both.
No
3 elements in both.
No
5.1.2013
4Y + 3R2 = 2Y2R3