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Periodic Table

Vocabulary of Matter and Elements

TermDefinition
Matter Anything that takes up space and has mass
Mass The material that matter is made up of
Volume How much room / space 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 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 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 the nucleus along with the proton
Periodic Table Large grid that identifies and classifies all of the elements by their chemical and physical properties
Elements The simplest substance 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 valence electrons each element has / the number of electrons that 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 same # of neutrons and electron
Atomic mass The measurement of the mass for an elements atom
Chemical properties the ability of substances to combine with one another forming new and different compounds and molecules
Physical properties 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 substance and different substance
Mixture Two or more elements 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 most stable elements because they have eight electrons in their outer shell
Halogens All of the elements in Group #17- they are very stable elements because because they have eight electrons in their outer shell
Alkali Metals All elements in Group #1- they are very reactive because they have only one valence electron
Metalloids Electrons between metal and non-metals that can react either way, they have 3-7 valence electrons
Endothermic inner or inside, Chemical reaction that takes in energy- ex. vinegar and baking soda
Exothermic energy is released- ex. sunlight/ fusion
Created by: elisetrainor