Key Terms
Atoms
Chemical Equations
Properties
Periodic Table
100
The number of the outermost electrons in an atom.
What are valence electrons.
100
The part of the atom that is neutral and has no charge.
What is a neutron?
100
The name given to the arrow in a chemical equation.
What is the yields sign?
100
A physical characteristic of a substance
What is a physical property?
100
the number whereby one finds an element on the periodic table
What is the atomic number
200
Substances that are only combined physically.
What are mixed substances?
200
The name for the negatively charged part of an atom outside the nucleus.
What is an electron?
200
The name given to the right side of a chemical equation
What are the products?
200
A characteristic that one can only know through experimentation
What is a chemical property?
200
The total number of electrons for Molybdenum.
What is 42?
300
The name of a positively charged atom
What is a cation
300
The number of protons found in an atom
What is the atomic number?
300
A chemically bonded pure substance made up of at least two elements
What is a compound?
300
how much mass an object takes up in a particular space
What is density?
300
The average number of neutrons in Mercury
What is 120?
400
A chemical bond that shares electrons
What is a covalent bond.
400
The size of an atom
What is the atomic mass?
400
A balanced equation for Na2CO3 + HCl ----> NaCl + CO2 + H2O
What is Na2CO3 + 2HCl ----> 2NaCl + CO2 + H2O?
400
how flexible an object is
What is malleability
400
The oxidation number for group 6 of the periodic table
What is -2?
500
The center of an atom, composed of protons and neutrons.
What is the nucleus?
500
The term that describes electrons which share the same energy or are present in the same energy level.
What is an electron shell?
500
A balanced equation for H2SO4 + Fe ---> Fe2(SO4)3 + H2
What is 3H2SO4 + 2Fe ----> Fe2(SO4)3 + 3H2
500
a metal reacting with non-metal chlorine gas
What is a chemical property of sodium?
500
The number of valence electrons and oxidation number for Phosphorus
What is 5 and -3?
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