Science Quiz / Chemistry Ch 2

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Can you name the Chapter 2 Terms?

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DefinitionTerm
This is a solid substance that is formed in a solution.
This is a reaction when an element replaces another element.
Gas formation, solid formation, energy change, color change are signs of
This is what happens to the bonds of substances during a chemical reaction.
This law states neither mass nor energy can be created or destroyed
This law states that mass is neither created nor destroyed in ordinary chemical and physical changes.
The substances formed from a reaction.
A substance that speeds up a reaction without being permanently changed.
This uses chemical symbols and formulas as a shortcut to describe a chemical reaction.
This isa force that holds two atoms together in a molecule.
This is a chemical reaction in which energy is released.
A substance that slows down or stops a chemcial reaction
This is a shorthand way to use chemical symbols and number to represent a substance.
This is a process in which one or more substances change to make one or more new substances.
Ionic compounds are usually composed of ?
This is a number written below and to the right of a chemical symbol in a formula.
The starting materials in a chemical reaction.
A reaction i nwhich a single compound breaks down to form two or more simpler substances.
This is a reaction in which ions from two compounds exchange places.
A reaction in which two or more substances combine to form one new compound.
Covalent compounds are usually composed of two what?
This is the smallest amount of energy that molecules need to react
A chemical reaction in which energy is taken in

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