Periodic Table Vocabulary

the smallest particle of an element

a well-tested idea that explains and connects a wide range of observations

located at the far left side of the periodic table, group 1

those electrons that have the highest energy level and are held most loosely

includes the symbol for the element surrounded by dots

usually consisted of one or two letters

anything that has mass and takes up space

the elements in group 17

a row of elements across the periodic table

Question is located in the picture box

one or more positively charged particles in the nucleus of an atom

a particle that is electrically neutral

the number of protons in the nucleus of an atom

the negatively charged particles

a pure substance made of 2 or more elements that are combined chemically in a specific ratio

Look at the picture box for question!!!!!

tiny region in which positive charge must be clustered

Question is located in the picture box!!!

the simplest pure substances, and they cannot be broken down into any other substances

elements in the same column

the specific amount of energy an element has

the group 18