Term | Definition |
matter | anything that has mass and takes up space |
mass | the material that matter is made up of |
volume | how much room it takes up |
density | D=m/v the amount of stuff matter takes up in a space |
atom | The smallest part of an element |
electron | particle of an atom with a negative charge |
proton | particle of an atom with a positive charge |
nuetron | part of an atom with a neutrul charge |
Periodic Table | large grid that identifies elements |
element | the simplest substance that can not be broken down |
periods/rows | rows that tell the how many energy levels each element has |
groups/familys | columns that tell how many valence electrons an element has |
valence electrons | the electrons that move on the outer shell |
atomic numbers | how many protons an element has |
atomic mass | the measurement of the mass for an element |
chemical property | the ability of substances to combine and create a new substance |
physical property | the state of matter and appearance of a substance |
ionic bonds | when elements lose or gain an electron while bonding |
covalent bond | when elements share electron while bonding |
chemical change | elements bond together through an attractive force creating an reaction or change |
compound | two or more elements chemically combined together |
mixture | two or more elements that are not chemically combined |
Nobel Gases | all of the elements in group 18 |
Halogens | all of the elements in group 17 |
Alkali Metals | all of the elements in group 1 |
Metalloids | elements between metal and non-metals |