A substance that cannot be broken down into simpler substances is An element The science of matter and how it changes Chemistry The smallest unit of a substance that behaves like the substance is An atom Which of the following is a gas-liquid mixture? The air we breathe A carbonated drink Soapsuds Ice cubes Carbonated Drink A material that can be represented by a chemical formula is a Pure substance You put 1 gram of salt into 1 liter of water and stir. The resulting liquid is an example of A pure substance Heterogeneous mixture A homogeneous mixture An immiscible mixture A homogeneous mixture Smoke is an example of a Substance Solution Colloid Suspension Colloid Another name for a liquid homogeneous mixture Suspension Substance Solution Liquid Solution Matter is defined as anything that Has mass and takes up space A heterogeneous mixture containing a liquid in which visible particles settle is called a? Suspension A mixture that contains two or more substances blended evenly throughout is called a ? Homogeneous Mixture A substance in which all atoms are alike is called? An element The scattering of light by colloidal particles is called the? Tyndall Effect Water element compound mixture compound Sulfur element compound mixture element Pepper element compound mixture Mixture Vinegar homogeneous heterogeneous homogeneous Italian Salad Dressing homogeneous heterogeneous heterogeneous Tea suspension colloid solution solution Orange juice with pulp suspension colloid solution suspension Fog suspension colloid solution colloid A molecule of water (H2O) is made from _____ combining two hydrogen atoms and one oxygen atom. a. physically b. ionically c. thermally d. chemically chemically The chemical formula for water, H2O, means that each water molecule contains a.two hydrogen atoms and two oxygen atoms. b.two hydrogen atoms and one oxygen atom. c. two hydrogen atoms and zero oxygen atoms. d.one hydrogen atom and two oxygen atoms. two hydrogen atoms and one oxygen atom. Which of the following is not a pure substance? a. element b. molecule c. compound d. mixture mixture Which of the following is an element? a. salt b. iron c. nylon d. sand iron The different substances in a mixture a. keep their properties. b. combine chemically. c. form new molecules. d. cannot be separated. keep their properties. A heterogeneous mixture with particles that NEVER settle? a. solution b. suspension c. colloid d. compound colloid Which tool is best for separating a mixture of sand and water? a. tweezers b. magnet c. centrifuge d. filter filter Any material made of two or more substances that can be physically separated? a. element b. mixture c. compound d. molecule mixture Unlike a mixture, a pure substance has a. atoms b. molecules c. a specific size. d. a fixed composition. a fixed composition. The resistance of a fluid to flow is referred to as a. pressure. b. energy. c. viscosity. d. shape. viscosity. Matter includes all of the following EXCEPT a. air. b. light. c. smoke. d. water vapor. light A(n) _________________ is NOT homogeneous. a. suspension b. element c. compound d. solution suspension