Properties, Changes, & Classification of Matter TEST REVIEW

Vocabulary Review A pure substance that cannot be separated into simpler substances by physical or chemical means Element The sample of matter, either a single element or compound, that has definite chemical and physical properties. Pure substance

Vocabulary Review Where would the most dense substance be in a container? On the bottom Give an example of a physical change. Answers will vary – ex. Tearing paper What happens to an object that is less dense than water when it is placed in water? Floats

Vocabulary Review Two or more elements chemically joined together. Compound Combination of two or more substances that are not chemically combined. Mixture Homogeneous mixture of two or more substances uniformly dispersed throughout a single phase Solution

Vocabulary Review Name a sign of a chemical change. Change in color or odor, production of heat or light, production of a gas True or False? During physical changes, matter always retains its identity. True Give an example of a chemical change. Answers will vary – example: burning

Vocabulary Review Mixture in which particles of a material are more or less evenly dispersed throughout a liquid or a gas and will settle out. Suspension Mixture consisting of tiny particles that are intermediate in size between those in solutions and those in suspensions. Colloid A measure of the amount of matter in objects Mass

Types of Substances Kool-Aid Water Italian salad dressing Steel Oxygen Jell-O Colloid Compound Alloy Suspension Element Solution

Types of Substances Kool-Aid F. Solution Water B. Compound Italian salad dressing D. Suspension Steel C. Alloy Oxygen E. Element Jell-O A. Colloid

Multiple Choice A substance that contains a large amount of solute is (dilute or concentrated). Compounds can be separated by (physical, chemical, or both) means. (Solution or Colloid) is a homogeneous mixture that scatters light. True or False? Elements can be broken down. (Solutions, Elements, or Compounds) are a chemical combination of two or more different atoms.

Answers to Multiple Choice A substance that contains a large amount of solute is concentrated. Compounds can be separated by chemical means. Colloid is a homogeneous mixture that scatters light. False Elements can be broken down. Compounds are a chemical combination of two or more different atoms.

Give the following information for density. Formula for density Unit for density Density of water Density= mass / Volume g/mL 1g/mL

Tell if the following characteristic is typical of a solution, colloid, or suspension. (You may have more than one answer.) Heterogeneous Scatters light Will settle out Can be filtered Homogeneous

Tell if the following characteristic is typical of a solution, colloid, or suspension. (You may have more than one answer.) Heterogeneous - suspension Scatters light - colloid & suspension Will settle out - suspension Can be filtered - suspension Homogeneous - solution & colloid

Identify each picture as an element, compound, solution, colloid, or suspension.

VOCABULARY A pure substance that cannot be separated into simpler substances by physical or chemical means Element The sample of matter, either a single element or compound, that has definite chemical and physical properties. Pure substance

Anything that has mass and takes up space Matter The amount of space occupied by an object Volume Ability to be pounded into thin sheets Malleability Ability of a substance to burn Flammability Ability of a substance to react with other substances Reactivity

Identify the following as a homogeneous or heterogeneous mixture. Sandwich Heterogeneous Sweet tea Homogeneous Italian dressing Vegetable soup Air

What to study… If you just study this, then you will not be prepared. You should study your notes, labs, and worksheets from class as well! Good luck!