BIO201 Human Anatomy & Physiology Chapter 2
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1. The science of structure and interactions of matter.: Definition of chemistry
2. Anything that has mass and takes up space.: Definition of matter
3. The amount of matter a substance contains, whereas weight is the force ofgravity
acting on mass: Definition of mass
4. 1. Solid
2. Liquid
3. Gas
All forms of matter are composed of chemical elements.: 3 forms in which matterexists:
5. 1. Smallest units of matter
2. Retain the properties and characteristics of an element
3. Are composed of protons (+), neutrons (n),
and electrons (-): Atoms are:
6. Number of protons in the nucleus of an atom.
*Protons and electrons equal each other.: What is an atomic number?
7. Number of protons and neutrons in an atom.: What is the mass number of anatom?
8. Atoms of an element that have different numbers of neutrons and therefore
different mass numbers.: Define isotopes:
9. Neutron = 1.008 daltons
Proton = 1.007 daltons
Electron = .0005 daltons
*Atomic mass/weight of an element is the average mass of all its naturallyoccurring
isotopes.: Atomic mass assumes the mass of:
10. An atom that has lost or gained an electron.
*Ion means charged.: Define ion:
11. 2 or more atoms sharing electrons.: Define molecule:
12. A substance that can be broken down into 2 or more different elements.: -
Define compound:
13. The complete transfer of valence electron(s) between atoms which gener-ates two
oppositely charged ions:
Gain : Cations (+) positively charged
Loss: Anions (-) negatively charged atom: Define ionic bond:
14. Electrons are shared by two atoms to form covalent bonds.: Explain cova-lent
bonds:
15. Seen in water where oxygen spends more time with atoms than hydrogen,therefore
causing a partial negative charge.: Explain polar covalent bonds
16. Capacity to do work.
-Potential Energy
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1. The science of structure and interactions of matter.: Definition of chemistry
2. Anything that has mass and takes up space.: Definition of matter
3. The amount of matter a substance contains, whereas weight is the force ofgravity
acting on mass: Definition of mass
4. 1. Solid
2. Liquid
3. Gas
All forms of matter are composed of chemical elements.: 3 forms in which matterexists:
5. 1. Smallest units of matter
2. Retain the properties and characteristics of an element
3. Are composed of protons (+), neutrons (n),
and electrons (-): Atoms are:
6. Number of protons in the nucleus of an atom.
*Protons and electrons equal each other.: What is an atomic number?
7. Number of protons and neutrons in an atom.: What is the mass number of anatom?
8. Atoms of an element that have different numbers of neutrons and therefore
different mass numbers.: Define isotopes:
9. Neutron = 1.008 daltons
Proton = 1.007 daltons
Electron = .0005 daltons
*Atomic mass/weight of an element is the average mass of all its naturallyoccurring
isotopes.: Atomic mass assumes the mass of:
10. An atom that has lost or gained an electron.
*Ion means charged.: Define ion:
11. 2 or more atoms sharing electrons.: Define molecule:
12. A substance that can be broken down into 2 or more different elements.: -
Define compound:
13. The complete transfer of valence electron(s) between atoms which gener-ates two
oppositely charged ions:
Gain : Cations (+) positively charged
Loss: Anions (-) negatively charged atom: Define ionic bond:
14. Electrons are shared by two atoms to form covalent bonds.: Explain cova-lent
bonds:
15. Seen in water where oxygen spends more time with atoms than hydrogen,therefore
causing a partial negative charge.: Explain polar covalent bonds
16. Capacity to do work.
-Potential Energy
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