-
Silvery colored solids with low densities and low melting points
Alkali metals
-
-
More Reactivity than alkaline earth metals
Alkali metals
-
Potatoes and table salt
Alkali metals
-
Bananas and lithium batteries
Alkali metals
-
Group 2
Alkaline earth metal
-
Less reactive then Alkali meals
Alkaline earth metals
-
Has a higher melting then Alkali metals
Alkaline earth metals
-
is denser and harder than Alkali metal
Alkaline earth metals
-
Group 13
The boron family
-
Used to make cookware, aluminum, glaiuium
the boron family
-
Group is all metals except one
The boron family
-
Group 14
The carbon group
-
Group contains the elements tin and led which are the heaviest elements
The carbon group
-
Include silican and germanium
The carbon group
-
Semiconductors , doesn't conduct electricity like metal
the carbon group
-
Include metals, metaloids, and non metals
the carbon group
-
Group 15
The nitrogen group
-
Parts of the biological material that store genetic info and energy in living organisms
The nitrogen group
-
Include the element phosphorus
The nitrogen group
-
Used to make ammonia, feterlizer, disenfectants, used to freeze dry food
The nitrogen group
-
contains the elements sulfur, selenecium
The oxygen family
-
Group includes nonmetals and metalloids
the oxygen family
-
Used to make foam used by firefighters
The oxygen family
-
ozone is made up of oxygen and protect us from the UV rays
the oxygen group
-
Light meters and solar cells and sulfuric acid
The oxygen group
-
Group 17
the halogens group
-
forms salt with Alkali metals
The Halogens group
-
Chlorine, iodine, florine, bromine
The halogens group
-
-
reactivity low
The noble gases
-
-
How did the periodic table change over time?
1st , elements were arranged by order of their increasing atomic mass, now, they are arranged by their increasing atomic number
-
What are periods?
Row of elements going across in the table whose properties change gradually
-
What are groups
Contains elements that have similar physical and chemical properties
-
What are non metals?
gas or brittle solid at room temperature
-
What are representative elements?
Groups 1 and 2 and 13-18
-
What are metals?
has luster and conducts heat and electricity
-
What are metaloids?
shows propertied of a metal and non metal
-
What are semi conductors
conducts electricity better than nonmetals, but worst than metals
-
What are catalyst?
substance that speeds up chemical reaction, but does not change itself.
-
What are transition elements?
Groups 3-12, Actanides series, Lantantides series, and are all metals.
-
What are synthetic elements?
Elements made in laboratories
-
MOst _________ are synthetic elements.
actinides
-
___________ has magnetic properties.
Iron Traid elements
-
All transition elements are ____________.
metals
-
Most non metals are -______________.
Brittle
-
Elements that can be pounded into thin sheets are _________________.
malleable
-
The only non metal found on the left side of the periodic table is __________.
hydrogen
-
The iron triad is made up of the elements _________, ___________, and _____________.
iron, cobalt, and nickel
-
Most transition elements have _________ melting points than the Representative.
higher
-
____________ is a poisonous liquid, it can be used in dental materials if mixed with other metals
Mercury
-
Describe Actinides.
- Radioactive
- Uranium, thorium, and protactinium are the only natural elements.
- The rest are synthetic elements.
-
Describe Lanthanides.
soft metals, similar to others in group, nicknamed rare earths but not as rare as they were thought to be.
-
Name what is in an element key.
- atomic number
- symbol
- name
- atomic mass
- state of matter
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