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periodic table
vocab for matter and elements
| Term | Definition |
|---|---|
| Matter | Anything that takes up space and has mass |
| Mass | The material that matter is made up of |
| Volume | How much room/volume matter takes up |
| Density | Density=mass/volume the amount of material/stuff matter takes up within a specific space |
| Atom | Smallest part of an elements, the building blocks of all matter |
| Electron | Has an attractive force that allows it to bond with other atoms creating everything in the universe |
| Proton | Particles of an atom with a positive charge located inside the nucleus |
| Neutron | Particles of an atom with a neutral /no charge located inside the nucleus along with a proton |
| Periodic Table | Large grid that identifies and classifies all of the elements by their chemical and physical properties |
| Elements | 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 electrons to move around |
| Groups Or Family/Columns | Columns that tell how many valence electrons each 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 elctrons |
| Atomic Mass | The measurement of the mass for an elements atoms |
| Chemical Property | The ability of substance 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 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 substance combined 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 reaction bonding easily with elements in group #1 because they have seven valence electrons and want to be stable |
| Alkali Metal | 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 |
| endothermic | chemical reaction that it "takes in" energy. ex: vinegar and baking soda |
| exothermic | energy is released ex: sunlight/fusion |
Created by:
annecurtis2
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