8th ch4 atomic structure and the periodic table

the number of protons in the nucleus of an atom

the concept of the atom began in the mind of an English chemistry teacher in the 1800s

what similarities do the elements of a particular period on the periodic table have?

negatively charged particles surrounding the nucleus of an atom

a vertical column of elements on the periodic table

elements that have properties of both metals and nonmetals

what are the three major categories of elements?

the mass of an electron is 1 amu

particles with no charge found inside the nucleus of an atom

a horizontal row of elements on the periodic table

in an atom that has no charge, the number of

isotopes of an element have different numbers of protons in their nucleus

the sum of protons and neutrons in the nucleus of an atom

neutral atoms carry an electrical charge of

the elements on the columns sandwiched between families 3 and 4 on the periodic table

the part of the atom that determines its chemical reactivity

on the periodic table, elements decrease in both their mass and the number of electron energy levels as you move from

atoms of the same element that have the same number of protons but different number of neutrons

why do family groups of elements on the periodic table share such similar chemical properties?

the mass of an atom measured in amu

the word ATOM means "not able to cut"

the smallest particle into which an element can be divided and still be the same substance

models of the atom that were presented before 1890 were all based on

which of the following is the correct chemical symbol for chlorine

positively charged particles inside the nucleus of the atom

Valence electrons are the electrons farthest to the nucleus