Smartbook Ch. 2 Pt. 1

A(n) _____ contains only one type of atom, whereas a(n) _____ is composed of two or more different elements bonded together. A(n) _____ also contains more than one substance, but these can be separated by physical means, whereas the components of a compound cannot.

element, compound, mixture

Which of the following statements correctly describe compounds? Select all that apply. a) A compound contains a fixed number of atoms in its formula. b) The components of a compound can be separated physically. c) The properties of a compound are the same as the properties of its component elements. d) A compound has a fixed mass ratio of its components.

a) A compound contains a fixed number of atoms in its formula. d) A compound has a fixed mass ratio of its components.

Which of the following are compounds? Select all that apply. a) FeCl3 b) Mg c) P8 d) Fe e) N2O5 f) CH4 g) F2 h) CuO

a) FeCl3 e) N2O5 f) CH4 h) CuO

Match each type of substance with the correct description. 1. Element 2. Compound 3. Mixture a) Simplest substance that contains only one type of atom b) A substance consisting of chemically combined atoms from two or more elements c) Consists of two or more substances physically combined

a, b, c

Which of the following statements correctly describe a mixture? Select all that apply. a) The components of a mixture must be separated by chemical means. b) A mixture may contain both elements and compounds. c) A mixture can vary in its composition. d) A mixture is not considered a pure substance.

b) A mixture may contain both elements and compounds. c) A mixture can vary in its composition. d) A mixture is not considered a pure substance.

Which of the following statements correctly describe an element? Select all that apply. a) The properties of an atom of a specific element depend on the source of that element. b) An element consists of only one kind of atom. c) An element cannot contain bonded atoms. d) An element may consist of two or more of the same atoms bonded together. e) An element can be broken down into simpler substances.

b) An element consists of only one kind of atom. d) An element may consist of two or more of the same atoms bonded together.

A mixture contains _____ or more different substances. A mixture is NOT a pure substance, and its components can be separated by _____ means. a) two; chemical b) two; physical c) one; physical d) one; chemical

b) two; physical

A molecule is an independent structure composed of two or more atoms chemically _____ together. A molecule composed of two atoms of the same element is called a(n) _____ molecule.

bonded, diatomic/homonuclear

Which of the following statements correctly defines a molecule? a) A molecule is the basic unit of a compound. b) A molecule is a substance consisting of two or more different elements chemically bonded together. c) "Molecule" is another word for "atom." d) A molecule is an independent structure consisting of two or more atoms covalently bonded together.

d) A molecule is an independent structure consisting of two or more atoms covalently bonded together.

A compound consists of two or more different _____ that are chemically bonded together in fixed proportions. A compound can be broken down into simpler substances, a process that involves a(n) _____ change.

elements, chemical

An element is the simplest form of matter that has unique _____ and chemical properties. An element consists of only one kind of _____.

physical, atom