Atoms
Periodic Table
Metals 1
Metals 2
Non-Metals and Metalloids
100
The smallest particle of an element
What is atom?
100
Discovered a set of patterns that applied to all elements and formed the Periodic Table we use today
Who is Mendeleev?
100
most are hard and shiny, form colorful compounds, less reactive, examples are iron, copper, nickel and gold
What are transition metals?
100
shininess, malleability, ductility, and conductivity
What are physical properties of metals?
100
dull, brittle, poor conductors
What are physical properties of non metals?
200
The area in the center of the atom where protons and neutrons are found
What is the nucleus?
200
horizontal rows, there are 7
What are periods?
200
Least reactive, examples are aluminum, tin and lead
What are transition metals?
200
the ease and speed with which an element combines or reacts with other elements and compounds
What is reactivity?
200
found along the border between metals and non metals
What are metalloids?
300
negatively charged particles
What are electrons?
300
vertical columns, there are 18
What are groups?
300
All elements found after 92, not naturally found on Earth
What are synthetic elements?
300
the gradual wearing away of a metal element due to a chemical reaction
What is corrosion?
300
substances that can conduct electricity under some conditions
What are semiconductors?
400
Positively charged particles
What are protons?
400
the number of protons
What is atomic number?
400
soft, malleable and shiny, found below the periodic table, mixed with more common metals to form alloys
What are lanthanides?
400
Very reactive, not found lone in nature, examples are potassium and sodium
What are alkali metals?
400
salt-forming
What are halogens?
500
Neutral Particles
What are neutrons?
500
equals the number of protons and neutrons
What is atomic mass?
500
Found below lanthanides, very unstable, everything after uranium was made in a laboratory
What are actinides?
500
hard, grey-white, good conductors of electricity, examples are calcium and magnesium
What are alkaline earth metals?
500
carbon, nitrogen, oxygen, halogen, noble gases, hydrogen
What are families of nonmetals?
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