Chapter 7

metals have these properties:

metals ____ electrons, most active metals have _____ valence electrons, and are found in groups ___, also called the _ block

nonmetals in general are

nonmetals ____ electrons

most active nonmetals have ____ valence electrons, found in groups _____, which are in the _ block

kind of element in between metal and nonmetal

two or more forms of an element in the same phase, having different structures are called, with two examples

the only liquid at room temperature

only liquid at room temperature

most abundant element in earth’s crust; second and third are. Most abundant in earth’s core are

most abundant element in the universe

most abundant gas in atmosphere, second and third

hydrogen _____ electrons most of the time, acting much like a _____. When this happens, hydrogen gets a ______ charge. With very active metals, hydrogen acts like a ________ and _____ an electron. Its charge is ________.

3 metals forming permanent magnets

hard water contains __,__,__ ions, which make it difficult to use soaps for cleaning

as ionization energies increase, metals get ____ reactive. As their ionization energies increase, nonmetals get ____ reactive. This can be explained

explain why transition metals’ compounds often are colored

relationship between number of unpaired electrons and the hardness of a transition metal

most reactive metal

most reactive nonmetal

most reactive element is

fluorine reacts with all other elements except

family containing elements in all three phases at room temperature

nonsparking tools