Question | Answer |
What is the number of protons plus the number of neutrons | atomic mass |
Russian chemist who produced the first periodic table of elements | Dmitri Mendeleev |
Table of elements, arranged by atomic number that shows the patterns in their properties | Periodic Table |
Vertical column in the periodic table-elements | Group(or family) |
Horizontal row in the periodic table-element properties | Period(or series) |
In an atom, the number of ____1____ is equal to the number of electrons | 1.Protons |
Space outside the nucleus where electrons orbit | Shell |
K shell holds how many electrons | 2 electrons |
The smallest particle of matter that displays the properties of an element | Atom |
A substance composed to only one kind of atom-it cannot be broken down into simpler substances by ordinary means | Element |
The center of the atom which contains protons and neutrons-has a positive charge | Nucleus |
Positive particle found in the nucleus of an atom | Protons |
The particle having no charge and found in the nucleus of an atom | Neutron |
The number of protons(electrons) in an atom-it is used to identify an element | Atomic number |
Happening at regular interval
(Ex. The days of the week) | Periodic pattern |
A British scientist, determined the number of protons of an atom | Henry Moseley |
The repeating chemical and physical properties of elements change periodically with the elements' atomic number | Periodic law |
4 things in each box of the periodic table | 1. Atomic number 2. Chemical symbol
3. Element name 4. Atomic mass |