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periodic table
vocabulary for matter and
| Question | Answer |
|---|---|
| matter | anything that has mass and takes up space |
| mass | the material/stuff that matter is made up of - it can be measured |
| space/volume | the specific area/place that matter takes up |
| density | D=M/v the amount of mass in a specific volume of space |
| atom | smallest part of an element , the building blocks of all matter |
| electron | particle of an atom with a negative charge , moves around the nucleus and has an attractive force that allows it to bond with other atoms creating everything in the universe |
| proton | particle of an atom with a positive charge located in the nucleus |
| neutron | particle of an atom with a neutral / no charge located inside the nucleus along with the proton |
| periodic table | large grid that identifies and classifies all of the elements by their chemical and physical property |
| element | the simplest substances that cannot be broken down/they make up all matter in the universe |
| periods/rows | rows that tell how many energy levels each elements has for the electron to move around |
| groups or family/columns | columns that tell how many valence electrons each element has / the number of electrons that can move on its outer shell / energy level |
| valence electrons | the electrons that move on the outer shell / energy level of an atom |
| atomic number | how many protons an element has inside the nucleus/usually is same # 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 compounds and molecules |
| physical property | the state of matter and appearance 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 elements 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 reactive bonding easily with elements in group #1 because they have seven valence electrons and want to be stable |
| Alkali Metals | all of the elements in group #1- they are very reactive because they have only one valence electron |
| Metalloids | elements between metals and non metals that can react either way, they have 3-7 valence electrons |
Created by:
MariahCousino
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