vocabulary for matter and elements

Term Definition
Matter Anything that has mass and takes up space
Mass The material that matter is made up of
Volume How much volume matter takes up
Density D=m/v The amount of material stuff matter takes up within a specific space
Atom The smallest part of an element. The reason for the building blocks all matter.
Electron The negative charge of an atom. Moves around the nucleus and has an attractive force that allows it to bond.
Proton The positive charge of an atom.
Periodic Table A large grid that identifies the all of the elements and their physical and chemical changes.
Elements The simple substances that cannot be broken down.
Periods/rows Rows that tell how many energy levels each element has for an electron to move around.
Groups of family/ 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 and electrons an element has inside the nucleus.
Atomic Mass The measurement of the mass for an elements atoms
Chemical Properties The ability of substances to combine with one another 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 some type of reaction together
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
Halogens 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 eletrons

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