Chem 111 - Study guides, Class notes & Summaries

CHEM 111 Exam 1|131 Questions with Verified Answers What are the two classifications of Matter? - CORRECT ANSWER pure substances and mixtures What is a pure substance? - CORRECT ANSWER constant composition and definite properties ex: water,sugar, gold What are the two classes of pure substances? - CORRECT ANSWER Elements and Compounds What is a mixture? - CORRECT ANSWER Has more than 1 pure substance and can be separated physically Mixtures can be... - CORRECT ANSWER heterogeneous...

Chem 111 Final Questions with Complete Solutions.

CHEM 111 Test 1 Exam 137 Questions with Verified Answers Solids - CORRECT ANSWER particles are close and organized, fixed shape Liquids - CORRECT ANSWER particles are close but unorganized, varying shape Gas - CORRECT ANSWER particles are far apart and unorganized, varying shape Physical changes - CORRECT ANSWER done alone. ex: melting point, density, electrical conductivity (ice berg) Chemical changes - CORRECT ANSWER interaction with another substance. ex: chemical reaction/chan...

CHEM 111 ACS Final 198 Questions with Verified Answers Chemistry - CORRECT ANSWER the study of matter and how it changes matter - CORRECT ANSWER Anything that has mass and takes up space elements - CORRECT ANSWER molecules composed of one kind of atom; cannot be broken into simpler units by chemical reactions. atoms - CORRECT ANSWER The basic building blocks of matter property - CORRECT ANSWER A characteristic that defines the value, appearance, and/or state of an object. molec...

Know your significant figure rules Correct Answer-ALL zeroes between non-zero numbers are ALWAYS significant. ALL zeroes which are SIMULTANEOUSLY to the right of the decimal point AND at the end of the number are ALWAYS significant. ALL zeroes which are to the left of a written decimal point and are in a number >= 10 are ALWAYS significant. define calorimetry Correct Answer-the act of measuring heat required or evolved during a chemical process know how to calculate the amount of ener...

CHEM 111 TEST 102 Questions with Verified Answers As part of the calibration of a new laboratory balance, a 1.000 g mass is weighed with the following results: Trial 1: 1.201 +/- 0.001 Trial 2: 1.202 +/- 0.001 Trial 3: 1.200 +/- 0.001 The balance is: - CORRECT ANSWER Precise but inaccurate ______ are substances with constant composition that can be broken down into elements by chemical processes. - CORRECT ANSWER compounds Which of the following is not a unit in the SI system? - COR...

Chem 111 Lab Questions with Complete Solutions.

Chem 111 Study Guide Questions With Complete Solutions.

CHEM 111 Practice Test with Questions & CORRECT Verified ANSWERS

physical vs. chemical change - Answer-physical- does not change the substance. change in matter but nor chemical composition chemical- substance is changed. energy is absorbed or released. one or more substances being used solid - Answer-often rigid with definite shape gas - Answer-fills container and is easily comressed liquid - Answer-flows and takes shape of container, has a op surface 2 types of mixtures - Answer-heterogeneous- not uniform through out mixture homogeneous- uniform th...