science test chapter 14

Question 1

groups of two or more atoms linked by chemical bonds to form distinct units

Answer 1

molecules

Question 2

the sum of the atomic masses of all the atoms in the molecule

Answer 2

molecular mass

Question 3

molecules with the same number and types of atoms but different arrangements of atoms are…

Answer 3

isomers

Question 4

a substance that has the same physical properties throughout and consists of only one type of atom, one type of molecule, or one nonmolecular compound; either are elements or compounds

Answer 4

pure substance

Question 5

has the same physical properties throughout

Answer 5

homogeneous

Question 6

three-dimensional representation of a molecule that shows its shape and the position of its atoms

Answer 6

molecular model

Question 7

composed of several pure substances that are physically mixed but not chemically united

Answer 7

mixture

Question 8

a homogeneous mixture that exists because of attraction between atoms, molecules or ions

Answer 8

solution

Question 9

dissolved substances like salt or sugar

Answer 9

solutes

Question 10

the substance into which the solutes dissolve, like water or alcohol

Answer 10

solvent

Question 11

when the molecules of the mixed substances are not completely mixed, it forms a…

Answer 11

heterogeneous mixture

Question 12

a mixture containing tiny suspended clumps or particles

Answer 12

colloid

Question 13

a heterogeneous mixture whose particles are large enough that they will settle is a…

Answer 13

suspension