Periodic Table Flashcards
(23 cards)
How does melting point change over a period?
Melting points increase and then decrease across a period
Where are metals located on the periodic table?
On the left side/middle
Where are nonmetals located?
On the right side of the PT
Where are metallics located?
Between nonmetals and metals on the PT
Name all the parts of an element key
Element name, atomic number, symbol, atomic mass, and state of matter
Explain how sodium and chloride affect humans
They are both an essential part of our daily diet
What do elements in the same group have in common?
They have similar chemical properties and react with different elements in similar ways
What can the group of an element tell you
How many electrons are in the outer shell
What does the period of an element tell you
How many electron clouds there are
What are some properties of metals?
They are shiny and conduct thermal energy and electricity
What are some properties of nonmetals?
They are usually gases and don’t conduct energy
Name some properties of metaloids
They share common properties with both metals and nonmetals
What is group 1 on the PT
Alkali metals
What are some properties of alkali metals?
- react quickly with other elements
- only occur in compounds
- react violently with water
- soft enough to be cut
Group 2 on the periodic table is called…
Alkaline earth metals
Name some properties of alkaline earth metals
- pure ones don’t occur naturally/always in compounds
- reactive
Groups 3-12 on the periodic table
Transition elements
Name some properties of transition elements
- they’re all metals, have high melting points
- greater strengths and densities than the others
- good for building materials
- used to add color
Group 17 on the periodic table
Halogens
Name some properties of halogens
- refers to an element that can react with metal and form salt
- easily form compounds
- less reactive as you move down
Most common element in the universe
Hydrogen
Most abundant metaloid in the universe
Silicon
How are elements arranged on the periodic table?
They are arranged into columns and groups according to an elements properties
