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CP Biology
Basic Chemistry Quiz Study Guide
Name of Particle
Name ______________________________
Protons
Electrical Charge
Positive (p+)
Location within the atom
Nucleus
Neutrons
Neutral (n0)
Nucleus
Electrons
Negative (e-)
Electron cloud (energy levels)
Periodic Table of Elements
8
symbol
reactivity
2
bond
electrons
covalent
reactivity
positive
hydrogen
atomic
negative
The number of protons in an atom is the atomic______ number.
The letter that designates each atom on the periodic table is called its symbol_____
The number of protons is equal to the number of electrons_____. (in a neutral atom)
The number of valence electrons in the outer shell determine an atom’s reactivity____.
To be stable, or unreactive, an atom must have 8_________ valence electrons in its outer shell, with
the exception of hydrogen and helium, who only need _2____________. Remember, this is called
the octet rule.
A toms are held together in compounds by a force called a bond____.
A type of bond where electrons are SHARED is called a covalent_________ bond.
A.
B
Match the diagram above to the descriptions below:
__A,B,C________ covalent bonds
C_________ Chemical Formula
_A_______ Structural Formula
C. C6H12O6
Word Bank
Chemical reaction
Coefficient
Products
Reactants
4
2
6
Use the words and numbers to the right to answer questions referring to the above picture:
The arrow represents that a chemical rxn______has occurred.
Methane and Oxygen are reactants_ ______ and carbon dioxide and water are products ________.
The “2” in front of oxygen and the water molecules is called a _coefficients ________.
How many atoms of oxygen exist in the reactants? 4______
How many atoms of oxygen exist in the products? _4__________
How many atoms of Hydrogen exist in the reactants? _4__________
How many atoms of Hydrogen exist in the products? __4__________
Is the equations balanced? YES or NO? _ Y___________