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CHEM 1210: Midterm 1 Review Questions And Answers 2024/2025 Update
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CHEM 1210: Midterm 1 Review Questions And Answers 2024/2025 Update
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CHEM 1210: Midterm 1 ReviewQuestions And Answers 2024/2025
Update
matter ANS✔✔ anything that has mass and takes up space
property ANS✔✔ characteristic to identify and distinguish a type of matter
elements ANS✔✔ what all substances are made out of
atoms ANS✔✔ building blocks of matter
molecules ANS✔✔ two or more atoms joined in specific shapes
compounds ANS✔✔ combination of 2 or more elements
how many elements are known? ANS✔✔ 118
physical properties ANS✔✔ can be observed or measured without changing the identity or composition
of the substance (color, odor, density, melting/boiling point, hardness)
chemical properties ANS✔✔ describe the way a substance may change, or react, to form other
substances (flammability)
, intensive properties ANS✔✔ do not depend on the amount of matter present (temperature/melting
point)
extensive properties ANS✔✔ depend on the amount of matter that is present (mass or volume)
physical change ANS✔✔ changes physical appearance but not composition (same substance before and
after change)
changes of state are ANS✔✔ physical changes
chemical change ANS✔✔ substance is changed into a chemically different substance (hydrogen burns in
air to combine with oxygen and form water)
distillation ANS✔✔ a process that separates the substances in a solution based on their boiling points
chromatography ANS✔✔ A technique that is used to separate the components of a mixture based on
the tendency of each component to travel or be drawn across the surface of another material.
filtration ANS✔✔ A process that separates materials based on the size of their particles.
energy ANS✔✔ the capacity to do work or transfer heat
work ANS✔✔ energy transformed when a force exerted on an object causes a displacement of that
object
heat ANS✔✔ energy used to cause the temperature of an object to increase
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