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Peroidic table
vocabulary for matter and elements
Question | Answer |
---|---|
Matter | is everything with mass and takes up space. |
Mass | is the measure how much matter something has. |
Density | relates the mass of a given volume. |
Volume | is the amount of space matter takes up. |
Atom | smallest part of an element, building blocks of all matter. |
Electron | particle of an atom that surrounds the nucleus has an attractive force. |
Nuetrons | have no charge/nuetral |
Periodic Table | grid-like chart that sorts out all of the worlds elements. |
Element | cannot be broken down makes all matter |
Periods/Rows | tells how many energy levels of electron in an element |
Groups or family/columns | columns that tell how many electrons are on the outer shell |
Valence electons | electrons on the outer shell |
Atomic number | tells how many protons an element has inside it |
Atomic mass | tells how much mass an element has in its atoms |
Chemical properties | when substances combine forming a whole new substance |
Physical properties | describes the state of matter and appearance of an object |
Ionic bond | when elements lose or get electrons while bonding together |
Covalent bond | when elements share electrons while bonding together |
Chemical change / reaction | when elements bond by the attractive force of electrons creating a reaction |
Compound/Molecule | two or more elements chemically combined creating a new substance |
Mixture | two or more substances combined not forming a new substances |
Nobel Gases | Every element in the 18th group because of the number of electrons in the outer shell (8) also most stable |
Halogens | Every element in the 17th group because of the number of valance electrons in the outer shell (7) very reactive |
Alkali Metals | Every element in the 1rst group are very reactive and only one valance electrons |
Metalloids | elements that are metals and non metals that react either way they have 3-7 valance electrons |