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Chemistry 121 Exam 1 with complete solutions 2024_2025
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Chemistry 121 Exam 1 with complete solutions 2024_2025
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Chemistry 121 Exam 1 with completesolutions 2024/2025
What are the three states of matter? - ANSWER-solid, liquid and gas
___ 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
___ separate by boiling point - ANSWER-distillation
__ separate by solubility or attraction (chemical property) - ANSWER-
chromatography
__ depends upon amount of sample: (mass, volume, length) - ANSWER-extensive
__ does not depend on amount of sample: (color, temperature, melting point,
density) - ANSWER-intensive
__ __ __ __ are determined by studying how substances change or react to make
new substances and to give off or absorb energy. - ANSWER-chemical properties
of matter
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