Vocabulary for matter and elements

Term Definition
Matter Anything that takes up space and has mass and takes up space.
Mass The material that matter is made up of it can be measured.
Space/Volume The specific area or lace 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.
Periodic Table
Periods/rows Rows
Groups/Colums 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 also known as the energy level 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.
Iconic 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 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.
Halogenes 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.

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