chemical Bonding Flashcards
What is Atomic number
tells you the number of protons
how do you calculate mass number
protons + neutrons
what is the charge of a proton
+
what is the charge of an electron
_
what is the charge of an neutron
neutral
how many electrons in the first shell
2
how many electrons in the first shell
2
how many electrons in the second shell
8
how many electrons in the third shell
8
what is the trend in properties of group 1
Group 1 elements are known as Alkali Metals. They are called s-block elements because their highest energy electrons appear in the s subshell. Progressing down group 1, the atomic radius increases due to the extra shell of electrons for each element. Going down the group, the first ionization energy decreases.
what are the trends and properties in group 7
The halogens have low melting points and low boiling points. This is a typical property of non-metals. Fluorine has the lowest melting and boiling points. The melting and boiling points then increase as you go down the group.
what trends are in group 0
the outer shell, apart from Helium which has 2 - stable full outer shell. Unreactive. They are very unreactive. This means they don’t form molecules easily, so elements are found as single atoms.
the trend of reactivity for group 1
The reactivity of Group 1 elements increases as you go down the group because: the atoms get larger as you go down the group. the outer electron gets further from the nucleus as you go down the group.
what is the max number of electrons in the first shell
2
what is volume
lWH
how to form a positive ion
metal loses an electron
Does a giant Ionic structure have a high or low melting point
High melting point because it has strong electrostatic forces of attraction which require lots of energy to break
Describe and explain the conductivity of a Giant Ionic structure
I can only conduct when it is molten or Acquis because there is no free electrons when it is a solid
Describe and explain a simple covalent structure
Its structure is a small molecule structure It is held by strong Covent bonds between atoms ,weak intermolecular forcr brtyreen moleculs
Describe and explain a simple covalent structure
Its structure is a small molecule structure It is held by strong Covent bonds between atoms ,weak intermolecular force brtyreen molecules
Describe and explain a simple covalent structure
Its structure is a small molecule structure It is held by strong Covent bonds between atoms ,weak intermolecular forces between molecules
Describe and Explain the melting point of a simple covalent structure
It has a low melting point
when does water boil
100 Degrees Celsius
what is an example of kinetic energy?
A car rolling down a hill.
