ACE Physical Science 1110 PACE Test Questions and Already Passed Answers 2025 Set.

a substance with regions of differing properties - Answer heterogeneous a heterogeneous combination in which particles of one substance are suspended in another - Answer colloid a heterogeneous combination of substances that retain their individual properties and can be separated - Answer mixture the study of energy - Answer physics the study of matter - Answer chemistry the simplest homogeneous substance - Answer element the smallest particle of an element that still retain sits chemical and physical properties - Answer atom the total number of particles within an atom's nucleus - Answer mass number atoms of the same element with different masses - Answer isotopes a homogeneous combination with a uniform consistency whose components do not chemically combine in definite proportions - Answer solution the mass of a quantity of atoms compared to the mass of the same quantity of carbon-12 atoms - Answer atomic weight the material which is dissolved in a solution - Answer solute a bonded collection of two or more atoms - Answer molecule the material in which another is dissolved in a solution - Answer solvent