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CHEM 121 2026 STOICHIOMETRY AND REACTIONS STUDY MANUAL.pdf

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CHEM 121 2026 STOICHIOMETRY AND REACTIONS STUDY MANUAL.pdf

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CHEM 121 2026
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CHEM 121 2026

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CHEM 121 2026 STOICHIOMETRY AND
REACTIONS STUDY MANUAL


◉___ is the study of properties and behavior of matter. Answer:
chemistry


◉___ is the physical material of the universe. It is also anything the
has mass and occupies space. Answer: matter


◉__ is matter that is made up of one "thing" Answer: pure substance


◉__ is a mixture that doesn't have the same composition, properties,
and appearance throughout. Answer: heterogeneous


◉__ is a mixture that is uniform throughout. Answer: homogeneous


◉Solid to a gas is Answer: sublimation


◉Gas to a solid is Answer: deposition


◉Liquid to a solid is Answer: freezing

, ◉Liquid to a gas is Answer: vaporization


◉Gas to a liquid is Answer: condensation


◉Solid to a liquid is Answer: melting


◉What two things make up pure substances? Answer: elements and
compounds (molecules)


◉How many known elements are there? Answer: 118


◉What are most elements? Answer: monatomic


◉What seven elements are diatomic? Answer: H2, F2, Cl2, I2, O2, N2,
BI2,


◉Which of the following are heterogeneous? Magnesium, concrete,
seawater, milkshake. Answer: concrete & milkshake


◉__ precipitate less soluble component and separate solid from
liquid Answer: filtration
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