Unit 2 - Elements and Compounds Flashcards
1
Q
What are the three parts which make up an Atom?
A
- Proton
- Electron
- Neutron
2
Q
What is the relationship between the 3 atomic compositions?
A
- Electrons are not in the nucleus, and surround the middle part –> negative charge (low mass)
- Neutrons and Protons are in the middle (high mass)
Non-isotopes : Protons and Neutrons equal same amount
3
Q
1 amu (atomic mass unit)
A
1.661 x 10E-24
4
Q
What is an isotope?
A
Atoms with different number of NEUTRONS
same number of protons and e- but different atomic mass
5
Q
Alkali Metals
A
- Shiny Solids react violently with water
- Group 1A
6
Q
Alkaline Earth Metals
A
Group 2A
7
Q
Halogens
A
Group 7A
8
Q
Noble Gases
A
8A
9
Q
Ionic Bonding Occurs with which groups?
A
Bonding between:
metals 1a-3a
transition metals + no metals 5A-7A
10
Q
Covalent Bonding occurs with what groups?
A
Non-metals
11
Q
What occurs in Ionic Bonding
A
- Atoms will share electrons with another molecule
- Gain Electron –> Negative Bonding
- Lose Electron –> Positive Bonding
12
Q
Ion Charges
A
1a - 1+
2a - 2+
3b-2b (Transition Metals –> known will know when given)
3a - 3+
4a - 2+
5a - 3-
6a - 2-
7a - 1-
8a - neutral
13
Q
how do you name cations?
A
name of element + cationic charge
