Electrons and Energy Levels
Compounds and Chemical Formulas
Ionic and Metallic Bonds
Understanding Chemical Reactions
Types of Chemical Reactions
100
___________ are on the left side of the periodic table.
What are metals.
100
A bond when two atoms share one or more pairs of valence electrons.
What is covalent bond.
100
AN atom that is no longer neutral because it has gained or lost a valence electron.
What is Ion.
100
____________ is a process which atoms of one or more substances rearrange to form a new substance.
What is chemical reaction.
100
A reaction in which two or more substances combine and form one compound.
What is a synthesis reaction.
200
The outermost electrons in an atom are called its________________
What are valence electrons.
200
A covalent bond between oxygen and hydrogen is called?
What is water or H2O
200
The bond between positvely charged and negatively charged ions is called ___________.
What is ionic bond.
200
A change in__________, a change in___________, and a change in ___________ tell us a reaction has occurred.
What is color, odor, temperature.
200
AB ------> A+B
What is decomposition.
300
Stable elements with 8 valence electrons are called the _____________.
What are noble gases.
300
Covalent bonds are when ________ atoms bond with ___________ atoms.
Nonmetal and nonmetal
300
__________ bonds share pooled valence electrons.
Metallic Bond
300
____________ are the starting substances in a chemical reaction, and __________ are the substances produced in the reaction.
What is reactants and products.
300
Atomic bombs, lights, and fire are from what kind of reaction.
What is combustion.
400
How many valence electrons are in one oxygen atom?
What is 6.
400
Covalent bonds have__________ boiling points and are _________ conductors of electricity.
Low, Poor
400
Table Salt is which kind of bond, and what is its chemical name.
What is ionic bond. Sodium Chloride.
400
______________________ states that the total mass of reactants is the same before a reaction as the total mass of products after a reaction.
What is law of conservation of mass.
400
Fe+CuSO4 -------> FeSO4 + Cu what kind of reaction.
What is single replacement.
500
Which atom is stable, but only has 2 valence electrons?
What is helium.
500
What is the name of the compound N2P3
What is Dinitrogen Phosphate
500
What is it called for a metal to be hammered into sheets or pulled into wires?
Malleable
500
Balance the equation. H2+ 02 -------> H20
What is 2H2 +02 -------> 2H20
500
The negative ions in 2 compounds switch places in a __________.
What is double-replacement reaction.
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