Vocab for Matter and Elements

Term Definition
Matter Matter is everything around you. Atoms and molecules are all composed of matter. Matter is anything that has mass and takes up space.
Mass Mass is made up of matter and can be measured
Volume The amount of space occupied by an object measured in three dimensions, expressed in cubic units.
Density The amount of mass in a specific volume of space
Atom A atom is the smallest part of a element
Electron Particles in a atom that have has a negative charge
Proton Particles in a atom that has a positive charge
Neutron Particle of an atom with a neutral/ no charge located inside the nucleus with the proton
Periodic Table A large grid that classifies elements by their physical and chemical properties
Element They make up all matter in the universe
Periods/Rows Row that tell how many energy levels for the electrons that move around
Groups or families/Columns columns that tell how many valence electrons each element has
Valence electrons The electrons that move on the outer shell
Atomic number How many protons an element has inside the element
Atomic mass The measurement of the mass of an elements atom
Chemical property A substance to combined with one or another forming new different molecules
Physical property The state of matter and appearance of a substance
Ionic bond When elements either gain or lose an electron during bonding
Covalent bond When elements share electrons during bonding
Chemical change/Reaction Elements bond together thought the attractive force of electrons creating some type of reaction and change
Compound/Molecule Two or more element combined together
Mixture Two or more substances combined
Nobel Gases All of the elements in Group#18
Halogens All elements in Group#17
Alkali Metals All elements in Group#1
Metalloids Element between metals and non-metals

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