Chem 1210 Study guides, Class notes & Summaries

ex 1 - How many protons, electrons, and neutrons does an atom of 219Rn contain? Enter each answer as a number. protons: electrons: neutrons: - 86 86 133 Which of these has four and only four significant figures? - 53.50 mol Calculate the result, and choose the answer with the correct number of significant figures. (562.99 − 212.1) ÷ 4.9000 = - 71.61

intensive property - a property that depends on the type of matter in a sample, not the amount of matter extensive property - a property that depends on the amount of matter in a sample chemical property - Chemical properties are any of a material's properties that appears during or after a chemical reaction, that is, any quality that can only be established by changing the chemical identity of the substance. physical property - A characteristic of a pure substance that can be observed...

Which term best describes the following? Water is a __________________, Hydrogen Gas is a ______________________ and clear apple juice is a ___________________. - a compound, an element, a homogenous mixture. Which of the following scientific observations supports the following statement: "Lime is not an element" - When a pure metal of known composition is burned in oxygen, lime is produced as the only reaction product. freezing of liquid water, combustion of a hydrocarbon, rusting o...

intensive property - a property that depends on the type of matter in a sample, not the amount of matter extensive property - a property that depends on the amount of matter in a sample Energy - the ability to do work work - force x distance kinetic energy - the energy an object has due to its motion, 0.5mv squared potential energy - stored energy that results from the position or shape of an object

MIDDLESEX COUNTY COLLEGE PORTAGE LEARNING CHEM 210 EXAMS CHM 121 GENERAL CHEMISTRY I LECTURE PRACTICE FINAL EXAM QUESTIONS AND ANSWERS 1. The number of significant figures in 7.360  103 is a. 3. b. 4. c. 5. d. 6. e. 7. 2. What is the best answer to the following expression? (12.125 + 0.530 + 71.4) a. 84.055 b. 84.06 c. 84.1 d. 84.0 e. 84

New York City College of Technology. Department of Chemistry. CHEM 1210. General Chemistry II. Practice exam with Answers Key

ex 1 - How many protons, electrons, and neutrons does an atom of 219Rn contain? Enter each answer as a number. protons: electrons: neutrons: - 86 86 133 Which of these has four and only four significant figures? - 53.50 mol Calculate the result, and choose the answer with the correct number of significant figures. (562.99 − 212.1) ÷ 4.9000 = - 71.61

intensive property - a property that depends on the type of matter in a sample, not the amount of matter extensive property - a property that depends on the amount of matter in a sample chemical property - Chemical properties are any of a material's properties that appears during or after a chemical reaction, that is, any quality that can only be established by changing the chemical identity of the substance. physical property - A characteristic of a pure substance that can be observed...

Which term best describes the following? Water is a __________________, Hydrogen Gas is a ______________________ and clear apple juice is a ___________________. - a compound, an element, a homogenous mixture. Which of the following scientific observations supports the following statement: "Lime is not an element" - When a pure metal of known composition is burned in oxygen, lime is produced as the only reaction product. freezing of liquid water, combustion of a hydrocarbon, rusting o...

intensive property - a property that depends on the type of matter in a sample, not the amount of matter extensive property - a property that depends on the amount of matter in a sample Energy - the ability to do work work - force x distance kinetic energy - the energy an object has due to its motion, 0.5mv squared potential energy - stored energy that results from the position or shape of an object