8th ch4 atomic structure and the periodic table

the word ATOM means "not able to cut"

the mass of an atom measured in amu

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

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

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

positively charged particles inside the nucleus of the atom

particles with no charge found inside the nucleus of an atom

Valence electrons are the electrons farthest to the nucleus

the number of protons in the nucleus of an atom

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

negatively charged particles surrounding the nucleus of an atom

which of the following is the correct chemical symbol for chlorine

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

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

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

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

neutral atoms carry an electrical charge of

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

elements that have properties of both metals and nonmetals

the part of the atom that determines its chemical reactivity

what are the three major categories of elements?

a horizontal row of elements on the periodic table

the mass of an electron is 1 amu

in an atom that has no charge, the number of

a vertical column of elements on the periodic table

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