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~*Periodic Table*~
Vocabulary for Matter and Elements
Term | Definition |
---|---|
matter | anything that has mass and takes up space |
mass | the material that matter is made up of |
volume | how much room or space matter takes up |
density | the amount of material or stuff matter takes up within a specific space. The formula is Mass divided by Volume |
atom | the smallest part of an element |
electrons | part of an element with a negative charge. it creates eveything in the universe. |
protons | part of an element with a positive charge |
neutron | particle of element with a neutral charge |
periodic table | a large chart that organizes all of the elements |
element | a pure substance that cannot be broken down |
periods/rows | rows that tell how many energy levels each element has |
group/family/column | columns that tell how many valence electrons each element has |
valence electrons | electrons on the outer shell of the atom |
atomic number | how many protons an element has inside the nucleaus / usually is the same number of neutrons and electrons |
atomic mass | the measurement of the mass for an elements atoms |
chemical property | the ability of substances to combine with one another, forming new and different compunds and molecules |
physical property | the state of matter and apperance of a substance |
ionic bond | when elements either lose or gain an electron during bonding |
covalent bond | when elements share electrons during bonding |
chemical change/reaction | elements bond together through the attractive force of electrons creating some type of reaction and change |
compound/molecule | two or more elements combine together in a specific ratio/pattern creating a whole, new and different substance |
mixture | two or more substances combine together keeping their original properties, they do not change into a new substance/compound |
nobel gases | All of the elements in group #18- they are the most stable elements because they have eight electrons in their outer shell |
halogens | All of the elements in group #17- they are very active, bonding easily with elements in group #1 because they have 7 electrons and want to be stable |
alkali metals | All of the elements in group #1- they are very active because they only have one electron |
metalloids | elements between metals and non-metals that can react either way, they have 3-7 valence electrons |