The Periodic Table Flashcards
(14 cards)
How are elements arranged in the Periodic Table?
Elements are arranged by increasing atomic number
What can you predict from an element’s position in the Periodic Table?
You can predict the element’s properties based on its position
How does electron arrangement affect trends in the Periodic Table?
Trends in properties (like reactivity and ionisation energy) can be explained by changes in electronic arrangement across periods and down groups
What type of elements are found touching the line that separates metals (on the left) and non - metals (on the right) ?
Elements which have a combination of metallic and non - metallic properties, called metalloids or semi - metals
Why is silicon classified as a non - metal despite its shiny appearance?
Although it looks shiny and conducts electricity, it does not conduct as well as a true metal and has other non - metallic properties
Give an example of a metalloid and describe its properties
Silicon - it is a non metal that looks shiny and conducts electricity, but not as well as a metal
Are the d- block elements and transition metals exactly the same?
No, not all d - block elements are transition metals
Why are scandium and zinc not classified as transition metals?
They do not form compounds in which they have partly filled d- orbitals, which is a characteristic of transition metals
Why do elements in the same group have similar properties?
They have the same number of electrons in their outer main energy level
What is a group in the Periodic Table?
A vertical column of elements with similar chemical properties
How does reactivity change down a group in the s- block?
Reactivity increases going down a group (for metals)
How does reactivity change for non - metals, according to their group?
Reactivity increases going up a group (for non - metals)
What are the transition elements?
A block of rather unreactive metals, where most useful metals are found
What is a period in the Periodic Table?
A horizontal row of elements
