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Equations
Reactions
Energy
Signs
Pot Luck!!!
100
Compare the mass in a reaction that has 1 reactant and 2 products.
What is equal?
100
__________ cannot be formed during a chemical reaction.
What are atoms?
100
Energy is absorbed in these types of reactions.
What is exothermic and endothermic?
100
This change does not produce a new substance.
What is physical?
100
Part of the atom involved in bonding. Be specific.
What is a valence electron?
200
Starting substance in a chemical reaction.
What is a reactant?
200
A single replacement reaction has...
What are 2 reactants and 2 products?
200
Crushing a piece of chalk is an example of what.
What is increasing the surface area?
200
A solid formed when 2 liquids are mixed.
What is a precipitate?
200
A balanced equation must have the same number of these on each side of the equation.
What are atoms?
300
A new substance produced in a chemical reaction.
What is a product?
300
Reaction that occurs when a substance combines with oxygen and releases energy.
What is combustion?
300
Required to start a reaction.
What is activation energy?
300
The mixing of vinegar and baking soda giving off carbon dioxide bubbles is an example of this type of change.
What is a chemical change?
300
Matter is neither created or destroyed.
What is the law of conservation of mass?
400
A number placed in front of an element symbol or chemical formula in an equation.
What is a coefficient?
400
Reactants in this chemical reaction have 2 elements each of which exists as a single atom.
What is synthesis?
400
A substance that slows down or stops a chemical reaction.
What is an inhibitor?
400
Formation of bubbles of a ______________ can be a sign that a chemical reaction has occurred.
What is gas?
400
A metal and nonmetal create this type of bond.
What is an ionic bond?
500
Reactants and products are separated by this in a chemical equation.
What is an arrow?
500
In this reaction a substance breaks down and forms 2 or more substances.
What is decomposition?
500
Lowers the activation energy of a reaction.
What is a catalyst?
500
The foul odor of something rotting can be an example of this type of reaction.
What is decomposition?
500
Two nonmetals create this type of bond.
What is a covalent bond?