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Element
Compound
Periodic table
Periodic Table
ATOMS
100
A substance that cannot be separated or broken down into simpler substances by chemical means
What is an element
100
A pure substance that composed of two or more elements that are chemically combined.
What is a compound
100
What is group number two called and is it reactive?
Alkaline Family-Yes very reactive
100
What are the horizontal rows on The Periodic Table called?
What is periods
100
The atomic number tells you the number of what particles?
Protons
200
What are the three groups of elements
What is metals, metalloids, and nonmetals
200
Which is a compound,hydrogen, table salt, or oxygen?
What is table salt
200
The period numbers tell you what about the atom?
How many shells
200
What are the vertical columns on The Periodic Table called?
What is groups or familys
200
How do you calculate neutrons
Subtract atomic number from atomic mass
300
Why is an element considered a pure substance?
What is there is only one type of particle in an element.
300
What is the only way to break down a compound?
What is through a chemical change
300
The group number tells you what about the atom?
The number of valence electrons
300
metals that are so reactive that in nature they are found only combined with other elements
What is alkali metals
300
What is a neutral atom
Equal number of protons and electrons
400
What are three characteristics of a metal?
What is shiny, good conductors of heat and electricity, malleable and ductile.
400
What is the term used for atoms being attracted together to fill their valence shell
bond
400
The periodic table increases or decreases in reactivity as you go across it?
Decreases in reactivity
400
Unreactive nonmetals that do not react with other elements under normal conditions
What is noble gases
400
What are valence electrons?
Electrons on the last shell
500
What are four characteristics of nonmetals?
What is brittle, dull, unmalleable, poor conductors of heat and electricity.
500
If an atom has the same number of electrons and protons then it is what
Neutral
500
How many valence electrons does the nitrogen family have?
Five
500
The table is organized by what?
atomic number
500
Describe what a charged atom would be like and what is it called?
Unequal number of protons and electrons-ion