Subatomic Particles
Where are electrons located?
The electron cloud
What are the 3 types of chemical bonds?
1. Ionic bond
2. Covalent bond
3. Metallic bond
What is a vertical column on the periodic table called?
A group
What is the name for two or more atoms held together by chemical bonds?
A molecule
What is the name of the center of an atom?
The nucleus
What type of bond forms between two metals?
A metallic bond
Here is the periodic table entry for Cadmium. What is its atomic number?
______________
|48 |
| Cd |
| Cadmium |
| 112.41 |
______________
48
What type of particle forms when an atom gains or loses an electron?
An ion
What is a neutron's charge?
0
What type of bond is formed when an electron is transferred from one atom to another?
An ionic bond
Here is the periodic table entry for Palladium. What is its average atomic mass?
_____________
|46 |
| Pd |
| Palladium |
| 106.42 |
_____________
106.42
What is the name for an element that has properties of both a metal and a nonmetal?
A metalloid
What are the electrons in an atom's outermost energy level called?
Valence electrons
What type of bond is formed when one or more pairs of electrons are shared between atoms?
A covalent bond
How many valence electrons does Nitrogen, which is in group 15 of the periodic table, have?
5
How many valence electrons does this atom have?
https://upload.wikimedia.org/wikipedia/commons/9/90/88_radium_%28Ra%29_enhanced_Bohr_model.png
2
What has to be true in order for an atom to have a neutral charge?
It must have the same number of protons and electrons.
What type of chemical bond would Sodium (a metal located in group 1) and Chlorine (a nonmetal located in group 7) form?
An ionic bond
Is Neon (group 8) likely to form a chemical bond with Radon (group 8)? Why or why not?
No, both of their outer energy levels are already filled with electrons.
What two things do you add together to get an atom's mass number?
1. Atomic number (or number of protons)
2. number of neutrons