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Peridic Table
elements
Term | Definition |
---|---|
MATTER | anything that takes up space and has mass |
MASS | the material that matter i made up of |
VOLUME | how much room/space matter takes up |
DENSITY | the amount of mass in a specific volume of space |
ATOM | particle of a atom with a negative charge, moves around the nucleus and has an attractive force that allows it to bond |
PROTON | particle of an atom with a positive charge located inside the nucleus |
NEUTRON | particle of an atom with a neutral/ no change located inside the nucleus along with the proton |
PERIODIC TABLE | large grid that identifies and classifies all of the elements into groups and columns |
ELEMENTS | the simplest substance that cannot be broken down |
PERIODS/ROWS | rows that tell how many energy levels each elements has for the electrons to move alone |
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 levels of an atom |
ATOMIC NUMBER | how many protons an element has inside the nucleus / usually is the 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 electrons creating some type of reaction and change |
COMPOUND / MOLECULE | two or more elements combined together in a specific ratio / pattern creating a whole, new and different substance |
MIXTURE | two or more substances combined together keeping their original properties, the do NOT change in to a new substance / compound |
NOBEL GASES | all of the elements in group 18 they are 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 7 valence electrons and want to be stable |
ALKALI METALS | all of the elements in group1 they 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 | is a chemical reaction that takes in energy |
EXOTHERMIC | energy is released |