Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
chemistry semester
| Term | Definition |
|---|---|
| metric system | used to determine the units of measurements |
| scientific figures | the number of all known digits reported in measurements plus on estimated digit |
| scientific method | a systematic approach used in scientific study |
| base units | based on an object or event in the physical world |
| experiment | a set of controlled that test a hypothesis |
| big bang theory | the theory on how the universe expands or continues to expand |
| variable | capable of being changed or varied |
| hypothesis | a tentative, testable statement or prediction about what has been observed |
| precision | refers to how close a measure is to one another but may not be accurate |
| control | the standard that is used for comparison |
| percent error | the ratio of an error to an accepted value |
| theory | an explanation supported by many experiments |
| neutral | neither positive nor negative |
| isotope | atoms of the same element with different numbers of neutrons |
| mass number | the number after an elements name representing the sum of its protons and neutrons |
| average atomic mass | the mass of the atom itself |
| atomic number | the number of protons in an atom |
| nucleus | the extremely small, positively charged, dense center of an atom that contains positively charged protons and neutral neutrons |
| electron | a particle with a negative charge |
| neutron | a particle with a neutral charge |
| proton | a particle with a positive charge |
| subatomic particles | a particle smaller than an atom |
| compound | a chemical combination of two or more different elements |
| atom | smallest particle in an element |
| cloud shapes | determined by which the density at a given point is proportional to the probably of finding the electron |
| orbitals | three-dimensional regions around the nucleus |
| energy level | determine how far the electron is from the nucleus |
| period | a horizontal row of elements in the periodic table |
| electromagnetic spectrum | includes all forms of electromagnetic radiation |
| noble gas configuration | the arrangement of noble gases in an atom |
| electron configuration | the arrangement of electrons in an atom |
| wavelength | the shortest distance between equivalent points on a continuous wave |
| energy | the capacity to do work |
| frequency | the number of waves that pass a given point per second |
| valence electron | the electrons in an atom's outermost orbitals |
| quantum | the minimum amount of energy that can be gained or lost by an atom |
| ground state | the lowest possible state of an atom |
| excited state | the higher energy state of an atom |
| wave-particle duality | the exhibition of both wavelike and particle like properties by a single entity |
| octet rule | atoms lose, gain, or share electrons in order to acquire the stable electron configuration of a noble gas |
| electronegativity | the relative ability of an elements atoms to attract electrons in a chemical bond |
| ionic radius | the measure of all atoms ions in a crystal lattice |
| atomic radius | a measure of the size of atoms |
| periodic trend | the increasing or decreasing of atomic radius |
| nonmetals | generally gases or dull |
| metalloids | has physical and chemical properties of metals and nonmetals |
| metals | a metal that is solid at room temperature |
| group names | the names that classify what types of elements there are |
| group | a vertical column of elements in the periodic table |
| atomic symbol | the letter that represents the element |
| atomic mass | the weighted average mass of the isotopes of that element |
Created by:
babygirl248
Popular Chemistry sets