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Vocabulary
Main Ideas
Elements
Atoms
100
this is the force that holds atoms together called?
What is a chemical bond
100
All matter around you is composed of_____.
What are atoms
100
Iron is in this category on the periodic table
What is the metal category
100
A proton has a _____ charge
What is positive
200
This is a compound represented by a word.
What is a chemical formula.
200
Three thing necessary to start and maintain a fire are.
What are fuel, oxygen, and heat
200
Hydrogen has this amount of valence electrons
What is one
200
A neutron has a ______ charge
What is neutral
300
These things are the materials you have before and after a chemical reaction.
What are reactants and products
300
A_____ consists of a nucleus with electrons around it
What is an atom
300
Helium is in this family on the periodic table
What is the noble gases
300
An electron has a _______ charge
What is negative
400
This is the center of an atom.
What is the nucleus
400
The elements on the periodic table are in order of....
What is increasing atomic number
400
Carbon is in this family on the periodic table.
What is the carbon family
400
When an atom gains an electron it gains a _____ charge.
What is negative
500
These are the electrons farthest from the center of the atom.
What are valence electrons
500
The characteristics of an ionic compound include these three things
What are crystal shape, high melting point, and electrical conductivity.
500
Fluorine is in this family on the periodic table.
What is the halogen family
500
Ions made of more than one atom are called ______
What is polyatomic ions