Module 2: CHEM103 / CHEM 103 (Latest
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. atom: Basic unit of matter; made of protons, neutrons, and electrons;
have a nucleus that contains p and n and an electron cloud that surrounds it
2. proton: A subatomic particle that has a positive charge and that is found
in the nucleus of an atom
3. neutron: A subatomic particle that has no charge and that is found in the
nucleus of an atom
4. electron: A subatomic particle that has a negative charge and is found
outside of the nucleus
5. masses of subatomic particles: the proton and neutron have almost the
same mass, and the electron is 2000 x lighter; protons and neutrons are each
about 1 amu 6. electron cloud: a region around the nucleus of an atom where
, electrons are likely to be found; used because it is hard to tell exactly where
electrons are at a given moment
7. atomic number: the number of protons in the nucleus of an atom;
represented by the letter Z; written in the subscript in from of the atomic
symbol; all atoms of the same element have this same value; this number does
not change, therefore it determines the type of atom
8. mass number: the total number of protons and neutrons in the nucleus
of an atom; represented by the letter A; written in the superscript in from of a
chemical symbol; this number can differ due to isotopes (when the # of
neutrons is different)
9. isotopes: Atoms of the same element that have different numbers of
neutrons; all atoms have them; all isotopes of an element have similar
chemical properties
10. ion: A charged atom
11. cation: A positively charged ion that loses an electron
12. anion: A negatively charged ion that gains an electron
13. neutral atoms: have the same number of protons and electrons
Update ) General Chemistry I with
Lab | Questions & Answers | Grade A | 100%
Correct. Portage Learning
1. atom: Basic unit of matter; made of protons, neutrons, and electrons;
have a nucleus that contains p and n and an electron cloud that surrounds it
2. proton: A subatomic particle that has a positive charge and that is found
in the nucleus of an atom
3. neutron: A subatomic particle that has no charge and that is found in the
nucleus of an atom
4. electron: A subatomic particle that has a negative charge and is found
outside of the nucleus
5. masses of subatomic particles: the proton and neutron have almost the
same mass, and the electron is 2000 x lighter; protons and neutrons are each
about 1 amu 6. electron cloud: a region around the nucleus of an atom where
, electrons are likely to be found; used because it is hard to tell exactly where
electrons are at a given moment
7. atomic number: the number of protons in the nucleus of an atom;
represented by the letter Z; written in the subscript in from of the atomic
symbol; all atoms of the same element have this same value; this number does
not change, therefore it determines the type of atom
8. mass number: the total number of protons and neutrons in the nucleus
of an atom; represented by the letter A; written in the superscript in from of a
chemical symbol; this number can differ due to isotopes (when the # of
neutrons is different)
9. isotopes: Atoms of the same element that have different numbers of
neutrons; all atoms have them; all isotopes of an element have similar
chemical properties
10. ion: A charged atom
11. cation: A positively charged ion that loses an electron
12. anion: A negatively charged ion that gains an electron
13. neutral atoms: have the same number of protons and electrons
