1) What is a Crystal? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 2) What is a Model? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 3) What is an Extended Structure? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 4) What is a Molecule? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 5) What is a Chemical Bond? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 6) What is a Polymer? a) A group of two or more atoms that are held together by chemical bonds. b) A structure whose subunits occur in a constant ratio and are arranged in a repeating pattern. c) The connection between atoms in more complex particles d) A representation of an object which makes important aspects easier to see. e) A type of extended structure that is made of many smaller, repeating subunits in a chain. f) A solid structure whose atoms or molecules are arranged in a repeating, three-dimensional pattern. 7) What makes the difference in shape between two different molecules? a) The Chemical Structures of the molecules. b) They can not be different, as all molecules are made the same way. c) The different bonds that are made in the molecule. 8) What is atomic composition? a) A group fo two or more atoms that are held together by chemical bonds. b) The way in which the bonds in an atom are arranged. c) The types of elements that make up the substance. d) How the atoms are made since atoms make up everything. 9) What determines a molecules atomic composition? a) The weight of the molecules and their properties. b) The size of the molecule and its place in the periodic table. c) The type of elements and the number of atoms in each element. d) The number of atoms in each element and the size in the molecule. 10) When we constructed models of molecules in class, how could we identify the different atoms? a) The atoms were different shapes. b) The atoms were different lengths. c) The atoms were assigned a number and we knew which ones to use. d) The atoms were different colors, each color represented a different atom. e) Each atom was attached by a stick known as a bond. 11) What do the number 2 in H20 represent? a) That we have two hydrogen atoms in the molecule. b) That there are 2 molecules of water. c) That we have two oxygen atoms in the molecule. d) That there are two hydrogen and two oxygen molecules. 12) When I look at H20 and at H2O2 , do they make the same molecule? a) Yes they are both water. b) Yes they both contain hydrogen and oxygen atoms. c) No, there are a different number of hydrogen atoms in both molecules. d) No, there are a different number of oxygen atoms in both molecules.

Molecules and Extended Structures

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