Term | Definition |
Matter | anything that has mass and takes up space |
Mass | the material that matter is made up of |
Volume | how much volume or room something takes up |
Density | D=m/v the amount of material/stuff matter takes up within a specific space |
Atom | what everything is made up of, smallest part of an element |
Electron | negative charged atom, has an attractive force |
Proton | positive charged atom in nucleus |
Neutron | neutral charged atom |
Periodic Table | all of the elements and their atomic number organized |
Element | can't be broken down, makes up all matter |
Periods/Rows | energy levels of elements electrons |
Groups/Family/Columns | energy level, electrons moving on outer shell |
Valence Electrons | electrons moving on outer shell |
Atomic Number | how many protons and electrons in nucleus |
Atomic Mass | measurement of mass for an elements atom |
Chemical Property | combining substances and forming new substances and compounds |
Physical Property | change in state of matter and appearance |
Iconic Bond | elements losing or gaining electrons during bonding |
Covalent Bond | elements share electrons when bonding |
Chemical Change/Reaction | elements bond together through the attractive force of electrons |
Compound/Molecule | two or more elements combine in a specific ratio |
Mixture | two or more substances combined keeping same properties |
Nobel Gases | all elements in group 18, 8 electrons on outer shell |
Halogens | all elements in group 17, very reactive |
Alkali Metals | all elements in group 1, very reactive because of only one valence electron |
Metalloids | elements between metals and non-metals have 3 - 7 valence electrons |
Endothermic | taking in |