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Periodic Table
Vocabulary For Matter and Elements
| Term | Definition |
|---|---|
| Matter | anything that has mass and takes up space |
| mass | material that is made up of matter |
| volume | how much space matter takes up |
| density | the amount of material that takes up space |
| atom | the building blocks of matter and the smallest part of an element |
| electron | particle of the atom the surrounds the nucleus and has attractive forces with other atoms and has a negative and positive charge |
| proton | a positive electric charge equal to that of an electron, but of opposite sign |
| neutron | part of an atom found in the nucleus and has a negative charge |
| periodic table | a grid that groups and classify the elements into columns by their chemical and physical properties |
| period/rows | periods tell how many energy levels are around the nucleus and the columns tell us how many atoms are in the energy level |
| groups/columns | the number of electrons that can move out of their outer shell and their energy levels |
| valence electrons | its the energy level of atoms and electrons that move out of the outer shell |
| atomic number | same number of neutrons and electrons |
| atomic mass | the measurement of the mass for atoms in an element |
| chemical property | the ability of substances to combine with each other creating a new molecule and compound |
| physical property | the appearance of a substance and its state of matter |
| ionic bond | elements lose or gain an electron during bonding |
| covalent bond | elements share electrons during bonding |
| chemical bonding/reaction | a type of reaction and change and were elements bond together through attractive force |
| compound/molecule | elements combined together in a specific pattern creating new substances |
| mixture | is when two or more things combine keeping the original form |
| Nobel gases | they have 18 electrons in their outer shell |
| halogens | they bond easily with other elements and they are stable |
| alkali metals | they are very reactive and they only have one valence electrons |
| metalloids | elements between metals and non-metals that can react either way, they have 3-7 valence electrons |
Created by:
annanicole14
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