Chemistry Terms 1
This is the written expression of the number and type of atoms in a substance.
What is a chemical formula?
The substances that go into a chemical reaction are this.
What is reactants?
This is any two substances are physically combined, but not chemically bonded.
What is a mixture?
SiCl4 + __H2O ----> __SiO2 + __HCl
What is 1, 2, 1, 4?
Snapping a pencil in half is an example of a ____ change.
What is a chemical change?
What is a physical change?
The substances that are the product of a chemical reaction are this.
What is products?
Any mixture in which the substances are not evenly distributed throughout.
What is a heterogenous mixture?
__Na3PO4 + __HCl ----> __NaCl + __H3PO
What is 1, 3, 3, 1?
Lighting wood on fire is an example of a ____ change.
What is a chemical?
The change in a substances chemical composition.
What is a chemical change?
A chemical reaction that gives off more energy than it consumes is this.
What is an exothermic reaction?
Any mixture in which the substances are evenly distributed throughout.
What is a homogenous mixture?
Hg(OH)2 + __H3PO4 ----> __Hg3(PO4)2 + ___ H2O
What is 2, 3, 1, 6
Baking soda and vinegar is a _____ reaction.
(Hint, I'm not asking about the amount of energy given or taken off)
What is a chemical reaction?
This is when a compound either breaks down into or combines with another compound(s) to create a chemical change.
What is a chemical reaction?
A chemical reaction that consumes more energy than it gives off is this.
What is endothermic?
This is any two substances are physically combined, and chemically bonded.
What is a solution?
__FeS + __O2 ----> __Fe2O3 + __SO2
What is 4, 7, 2, 4
Calcium chloride, sodium bicarbonate, and vinegar undergo an _______ chemical reaction.
What is exothermic?
A reaction in which two or more compounds combine to create a new compound.
What is a synthesis reaction?
A reaction in which one compound breaks into multiple different compounds.
What is a decomposition reaction?
A mixture in which the substances can be easily separated and differentiated.
__HClO4 + __P4O10 ----> __H3PO4 + __Cl2O7
What is 12, 1, 4, 6?
Acetone and styrene combining together to create Norbornene is an example of a ____ chemical reaction (Hint, I'm not asking about how much energy it takes in or gives off)
What is a synthesis reaction?