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The smallest stable units of matter are
The smallest stable units of matter are
The 'atomic number' of an atom is determined by the number of ______ it has.
The 'atomic number' of an atom is determined by the number of ______ it has.
protons
The 'atomic weight' of an atom reflects the average number of
The 'atomic weight' of an atom reflects the average number of
One mole of any element
One mole of any element
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The nucleus of an atom consists of
The nucleus of an atom consists of
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Isotopes of an element differ in the number of
Isotopes of an element differ in the number of
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The mass number represents the number of
The mass number represents the number of
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The innermost electron shell in an atom holds up to ______ electrons.
The innermost electron shell in an atom holds up to ______ electrons.
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Radioisotopes have unstable
Radioisotopes have unstable
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By weight, which element is the most plentiful in the human body?
By weight, which element is the most plentiful in the human body?
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Indicate which of these lists contains only trace elements.
Indicate which of these lists contains only trace elements.
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The atomic number represents the number of
The atomic number represents the number of
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Helium (He) has an atomic number of 2. It is chemically stable because it
Helium (He) has an atomic number of 2. It is chemically stable because it
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Which element commonly has only a proton as its nucleus?
Which element commonly has only a proton as its nucleus?
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By weight, which element is the second most abundant in the human body?
By weight, which element is the second most abundant in the human body?
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The mass of an atom is largely determined by the number of ______ it has.
The mass of an atom is largely determined by the number of ______ it has.
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If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is?
If an isotope of oxygen has 8 protons, 10 neutrons, and 8 electrons, its mass number is?
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If an element is composed of atoms with an atomic number of 6 and a mass number of 14, then a neutral atom of this element contains
If an element is composed of atoms with an atomic number of 6 and a mass number of 14, then a neutral atom of this element contains
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The molecule NO is known as
The molecule NO is known as
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The molecule CO2 is known as
The molecule CO2 is known as
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The molecule H2 is known as
The molecule H2 is known as
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Study Notes
The Chemical Level of Organization
- Atoms are the smallest stable units of matter, foundational to the study of chemistry in anatomy and physiology.
- Atomic number is defined by the number of protons in an atom, crucial for identifying elements.
- Atomic weight reflects the average total of protons and neutrons present in an atom.
- One mole of any element contains an equal number of atoms, affirming Avogadro's hypothesis.
- The nucleus of an atom is composed of both protons and neutrons, which collectively determine the mass number.
- Isotopes differ primarily in the number of neutrons present in the nucleus, affecting stability and radioactivity.
- The mass number is the sum of protons and neutrons in an atom, important for understanding elemental properties.
- The innermost electron shell can accommodate up to two electrons, a key concept in atomic structure.
- Radioisotopes possess unstable nuclei, leading to radioactive decay and potential biological implications.
- Oxygen is the most abundant element by weight in the human body, underscoring its biological importance.
- Trace elements such as silicon, fluorine, and tin play critical roles in various physiological processes.
- Helium is chemically stable due to having a complete outer electron shell, making it inert under typical conditions.
- Hydrogen, characterized by a single proton, is unique among elements, influencing many chemical reactions.
- Carbon is the second most abundant element in the human body by weight, vital for organic molecules.
- Atomic mass largely hinges on protons and neutrons, providing insight into the physical properties of elements.
- The mass number of an oxygen isotope with 8 protons and 10 neutrons is 18, important for identifying specific isotopes.
- A neutral atom with an atomic number of 6 and a mass number of 14 contains 6 protons and 8 neutrons.
- NO refers to nitric oxide, an important signaling molecule in biological systems.
- CO2 is recognized as carbon dioxide, crucial for respiratory processes and metabolic functions.
- H2 is identified as hydrogen gas, fundamental to numerous chemical reactions and energy processes.
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Description
Test your understanding of the chemical level of organization in the human body with this quiz. Covering essential concepts such as atomic structure, this quiz will help reinforce your knowledge of fundamental anatomy and physiology principles. Perfect for students studying from 'Fundamentals of Anatomy and Physiology, 9e'.
