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Chapter 1

Across
Formed from a chemical reaction.
________ is composed of two or more separate elements.
A mixture that is uniform throughout
_______is characterized by the rearrangement of atoms when reactants are transformed into products.
The amount of the substance encountered.
Made up of two atoms. (Many nonmetal occur as _____ molecules)
Evaluating scientific data and making predictions about the probabilities of an occurrence.
Down
A homogeneous mixture composed of two or more elements.
A substance that takes part in and undergoes change during a reaction.
Symbolically represents the type and number of each element present
A mixture that is not uniform throughout.
A fixed number of atoms held together by chemical bonds in a certain spatial arrangement.
This is mainly composed of oxygen, nitrogen and carbon dioxide.
Intrinsic health hazard of a substance.
A physical combination of two or more substances.