CCBC Chapter 2 Bio 110 Lecture Notes to help for
Exam 1 UPDATED ACTUAL Questions and CORRECT
Answers
Question: 1. Inorganic compounds: ple substances
Answer:
small, sim- Include water, simple acids and bases, and simple salts
Question: 2. Organic compounds: large, complex carbon-containing compounds
Answer:
generally Two or more carbon atoms are bonded to each other to form the backbone of
the molecule
Question: 3. Elements
Answer:
substances that can't be broken down into simpler substances by ordinary chemical
reactions
Question: 4. Elements continued
Answer:
Oxygen, carbon, hydrogen and nitrogen are the four primary elements that make up
>96% of the mass of most organisms
Question: 5. Atom
Answer:
the smallest unit of an element that retains that element's chemical properties Made up
of tiny subatomic particles: neutrons, protons and electrons
Question: 6. Matter
Answer:
anything that has mass and takes up space
Question: 7. Atomic number
Answer:
the fixed number of protons in the atomic nucleus and determines an atom's identity and
defines the element
, Question: 8. Atomic mass
Answer:
The atomic mass of an atom equals the total number of protons and neutrons
Question: 9. Isotopes
Answer:
atoms of the same element with varying numbers of neutrons
Question: 10. Radioisotopes
Answer:
are unstable and tend to decay to a more stable isotope
Question: 11. Valence electrons
Answer:
participate in chemical reactions
Question: 12.
Answer:
An electron can move to a higher orbital by receiving more energy, or give up energy and
sink to a lower orbital
Question: 13.
Answer:
Changes in electron energy levels are important in energy conversions in organism
Question: 14. Chemical behavior
Answer:
of an atom is determined by the number and arrangement of its valence electrons
Question: 15.
Answer:
An atom tends to lose, gain, or share electrons to achieve a full outer shell
Question: 16. A chemical compound
Answer:
consists of atoms of two or more different elements combined in a fixed ratio
Exam 1 UPDATED ACTUAL Questions and CORRECT
Answers
Question: 1. Inorganic compounds: ple substances
Answer:
small, sim- Include water, simple acids and bases, and simple salts
Question: 2. Organic compounds: large, complex carbon-containing compounds
Answer:
generally Two or more carbon atoms are bonded to each other to form the backbone of
the molecule
Question: 3. Elements
Answer:
substances that can't be broken down into simpler substances by ordinary chemical
reactions
Question: 4. Elements continued
Answer:
Oxygen, carbon, hydrogen and nitrogen are the four primary elements that make up
>96% of the mass of most organisms
Question: 5. Atom
Answer:
the smallest unit of an element that retains that element's chemical properties Made up
of tiny subatomic particles: neutrons, protons and electrons
Question: 6. Matter
Answer:
anything that has mass and takes up space
Question: 7. Atomic number
Answer:
the fixed number of protons in the atomic nucleus and determines an atom's identity and
defines the element
, Question: 8. Atomic mass
Answer:
The atomic mass of an atom equals the total number of protons and neutrons
Question: 9. Isotopes
Answer:
atoms of the same element with varying numbers of neutrons
Question: 10. Radioisotopes
Answer:
are unstable and tend to decay to a more stable isotope
Question: 11. Valence electrons
Answer:
participate in chemical reactions
Question: 12.
Answer:
An electron can move to a higher orbital by receiving more energy, or give up energy and
sink to a lower orbital
Question: 13.
Answer:
Changes in electron energy levels are important in energy conversions in organism
Question: 14. Chemical behavior
Answer:
of an atom is determined by the number and arrangement of its valence electrons
Question: 15.
Answer:
An atom tends to lose, gain, or share electrons to achieve a full outer shell
Question: 16. A chemical compound
Answer:
consists of atoms of two or more different elements combined in a fixed ratio
