Atomic Structure and the Periodic Table: Group 1 (DONE) Flashcards
What’s another name for “Group 1”?
Another name for “Group 1” is the alkali metals.
All group 1 metals have _ outer shell electrons.
1
Describe the rate at which lithium reacts with oxygen? What is the name of the compound formed?
Lithium reacts rapidly with oxygen in the air. The lithium forms the compound lithium oxide.
The lithium is cut using a scalpel this is easy as all of the group one metals are soft
Describe the rate at which sodium reacts with oxygen? What is the name of the compound formed?
The sodium forms the compound sodium oxide. Sodium reacts even more rapidly with oxygen than lithium.
Describe the rate at which potassium reacts with oxygen? What is the name of the compound formed?
The potassium forms the compound potassium oxide. Potassium reacts even more rapidly with oxygen than sodium and lithium.
What happens to the reactivity of the group one elements as you go down the group?
The reactivity of the group one metals increases as you go down the group.
Describe how lithium reacts with water and what it produces.
Lithium reacts rapidly with water and there is fizz.
Explain how you would carry out the reaction between a group one element and water.
You would pour some water into a beaker and then add universal indicator and then place the group one metal of your choice into the water.
What does fizzing tell us?
Fizzing tells us gas is being produce.
What is the name of the compound formed when lithium is reacted with oxygen?
The name of the compound produced when lithium and water is reacted is lithium hydroxide.
Why do the group 1 elements get more reactive as we move down the group? (2)
The group one elements get more reactive as we move down the group because the atoms get larger meaning there is a greater distance between the nucleus and the outer shell electron. The attraction between the nucleus and outer shell electron gets weaker so the electron is more easily lost.
The outer shell electrons are repelled by the electrons in the internal shells. (scientists call this shielding). This decreases the attraction between the nucleus and the outer shell electron so the electron is more easy to loose.
(As we go down the group one elements they have more internal shells and this means shielding is increased as we move down the group one elements.)
What happens to the reactivity of the group one elements as you go UP the group? And why?
The reactivity of the group one metals decreases as you go UP the group because the atoms get smaller meaning there is a smaller distance between the nucleus and the outer shell electron. The attraction between the nucleus and outer shell electron gets stronger so the electron is less easily lost.
What do scientists mean by the term “shielding”?
By the term “shielding” scientists mean the outer shell electrons are repelled by the electrons in the internal shells.
Why is potassium more reactive than sodium?
Potassium is more reactive than sodium because potassium is a larger atom than sodium meaning there is a greater distance between the nucleus and the outer shell electron than sodium. The attraction between the nucleus and outer shell electron gets weaker so the electron is more easily lost for potassium.
Potassium has more internal energy levels than sodium meaning there is
Are internal energy levels and internal shells the same?
Internal energy levels are the same as the internal shells.
