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Exam (elaborations)

Ecpi Bio 111 Ch2 Exam With Verified Answers

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ECPI BIO 111 CH2 EXAM WITH VERIFIED ANSWERS

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ECPI BIO 111 CH2 EXAM WITH VERIFIED
ANSWERS


Anything that takes up space and has mass ______ is composed of elements . Solids , liquids
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, and gases are matter . - correct answer ✔Matter
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Amount of matter present - correct answer ✔Mass |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Heaviness due to gravitational pull on mass. (On earth) - correct answer ✔Weight
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Studies composition , properties , interaction of matter - correct answer ✔Chemistry
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Biological chemistry , which studies physiological process and disease - correct answer
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✔Biochemistry


Simplest types of matter with certain chemical properties . There are 92 naturally
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occurring ___________ . - correct answer ✔Elements |||||| |||||| |||||| |||||| |||||| ||||||




Chemical combinations of different elements - correct answer ✔Compounds
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Smallest particles of an element that have properties of that element - correct answer
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✔Atoms


Composed of subatomic particles - correct answer ✔Atoms |||||| |||||| |||||| |||||| |||||| |||||| ||||||




( equals the atomic numbers ) Large particles ; carry a single positive charge ( + ) Found in
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the nucleus . - correct answer ✔Protons
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, Large particles ; carry no electrical charge / neutral charge - correct answer ✔Neutrons
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Small particles ; carry a single negative charge ... found in the orbital region / shell around
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the nucleus - correct answer ✔Electrons
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(2-8-8) - correct answer ✔Octet rule |||||| |||||| |||||| |||||| ||||||




Number of protons in the nucleus of an atom of a specific element - correct answer
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✔Atomic Number ||||||




The number of protons plus the number of neutrons in one atom, Electrons contribute very
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little to the _____ of the atom because they are so light . - correct answer ✔Mass Number
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Particle formed when two or more atoms chemically combine - correct answer ✔Molecule
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Particle formed when two or more atoms of different elements chemically combine - correct
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answer ✔Compound ||||||




Depict the elements present and the number of each atom present in the molecule - correct
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answer ✔Molecular formulas |||||| ||||||




ALL _____ ARE _____ , BUT NOT ALL _____ ARE _____ - correct answer ✔ALL COMPOUNDS
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ARE MOLECULES , BUT NOT ALL MOLECULES ARE COMPOUNDS
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Form when atoms combine with other atoms . They result from interactions between the
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electrons of the atoms . - correct answer ✔Chemical bonds |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




The first shell can hold up to 2 electrons . The second shell can hold up to 8 electrons .
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The third shell can hold up to 8 electrons . - correct answer ✔Electron Shells
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