Compounds and mixtures 2 Study guides, Class notes & Summaries

Chapter 1: Elements & Compounds Introduction 1. Which of the following correctly describes one of the differences between compounds and mixtures? (a) Compounds contain more than one element but mixtures do not. (b) Compounds have a constant composition but mixtures do not. (c) It is easier to separate the elements in a compound than it is to separate the elements in a mixture. (d) All of these statements are true. (e) None of these statements are true. Answer: (b) 2. Which of the foll...

Chapter 01: Basic Physics for the Respiratory Therapist MULTIPLE CHOICE 1. Power is a measure of which of the following? a. Mechanical energy b. Gravitational potential energy c. The rate at which work is being performed d. The rate at which atoms and molecules move ANS: C Power is a measure of the rate at which work is being performed. The formula P = W/J, where W = watts and 1 watt is equal to 1 J/s, expresses this. Joules are the international standard for expressing energy and work...

Chapter 02 The Chemistry of Life Answer Key True / False Questions 1. Minerals are organic elements extracted from the soil by plants. FALSE Accessibility: Keyboard Navigation Blooms Level: 1. Remember Gradable: automatic HAPS Objective: O01.01e List the important dietary minerals and describe the major uses of each mineral in the body. HAPS Topic: Module O01 Nutrition. Learning Outcome: 02.01c State the functions of minerals in the body. Section: 02.01 Topic: Atoms and molecules 2. Molecules co...

HVAC: EPA 608 Certification Study Guide Questions and Answers | Latest Version | 2024/2025 | Rated A+ Are there alternative refrigerants that can be directly used in systems originally designed for R- 12? Why or why not? No, because these new refrigerants are not compatible with the lubricants and oils used in R- 12 systems. Explanation: The oils and lubricants in R-12 systems cannot properly interact with newer refrigerants, making direct replacements unfeasible. What type of o...

Package Title: Hein Test Bank Course Title: Hein 14e Chapter Number: 3 Question type: Multiple Choice 1) All matter is composed of elements. Approximately how many elements are there? a) 4 b) 10 c) 68 d) 100 Answer: D Difficulty: easy Learning Objective 1: Define an element and write the chemical symbol for an element when given its name. Section Reference 1: Section 3.1 2) The smallest particle of an element that can exist is called a(n) ___. a) atom b) ferrul...

CSP1501 Assignment 1 2024 (Solutions) Question 1 Not yet answered Marked out of 1.00 Flag question Question text Which one of the following options lists only inorganic compounds? a. Water, salts, gas b. Carbohydrates, protein, fats c. Salts, gas, carbohydrates d. Water, oxygen, carbon dioxide, electrolytes Clear my choice Question 2 Not yet answered Marked out of 1.00 Flag question Question text Select the correct symbol for Dubnium a. Db b. D c. Dm d. Du Questio...

Test Bank for Introduction to General, Organic and Biochemistry 12e 12th Edition by Frederick A. Bettelheim; William H. Brown; Mary K. Campbell; Shawn O. Farrell; Omar Torres. ISBN-13: 1594 Full Chapters test bank Chapter 1: Matter, Energy, and Measurement 1.1 Chemistry and the Study of Matter 1.2 The Scientific Method 1.3 Reporting Numbers in Science 1.4 Making Measurements 1.5 Unit Conversions 1.6 States of Matter 1.7 Density and Specific Gravity 1.8 Describing the Various For...

Chapter 1 – The Science of Nutrition Multiple Choice Answer, level, page Level: K = knowledge, A = application/critical thinking What Do We Mean by “Nutrition”? (pp. 5-8) a A 6 1. Which of the following ingredients in a box of toaster pastries would contribute macronutrients to one’s diet? a. Water, high-fructose corn syrup, egg yolk b. Niacin, folic acid, sucralose c. Riboflavin, salt, sodium benzoate d. Thiamin mononitrate, soybean oil, sugar c K 5 2. The term “n...

Module 6: Problem Set Question 1 Define or describe: (a) Amorphous solid (k) Molality (b) Colligative property (l) Molarity (c) Colloid (m) Nonelectrolyte (d) Condensation (n) Phase (e) Critical point (o) Strong electrolyte (f) Critical pressure (p) Sublimation (g) Crystalline solid (q) Surface tension (h) Electrolyte (r) Triple point (i) Fluid (s) Vapor pressure (j) Ionization (t) Weak electrolyte Answer: (a) Amorphous solids are ones in which the particles are arrang...

Chemistry Cumulative REVIEW Questions and Answers Graded A+ Determine how to find density. Write out the formula. What is the density of an item with a mass of 40.0 grams and a volume of 8.0 milliliters? Show your calculations. Density = mass/volume 40.0 g ÷ 8.0 mL = 5.0 g/mL Provide the density of water? Based on this, would the object from the previous question float or sink in water? Provide an explanation. Water has a density of 1 g/mL. Since the object’s density is greater ...