Modern periodic table Study guides, Revision notes & Summaries

Chapter 1—Living in a World of Chemistry MULTIPLE CHOICE 1. Which activity comes first in the scientific method? a. conclusion b. hypothesis c. experimentation d. observation ANS: D 2. Which is considered a physical science? a. physics b. biology c. zoology d. botany ANS: A 3. A scientist is trying to make a new insecticide that will be more toxic to flies, but less toxic to humans than insecticides now available. The scientist is engaged in a. basic research. b. applied research. ...

How do isotopes of the same element differ? They have different number of neutrons Which scientist was responsible for developing the format of the modern periodic table? Mendeleev Current, or the amount of electricity that is flowing, is measured in Amperes or Amps What property of motion explains why passengers in a turning car feel pulled toward the outside of the turn? inertia According to the Ideal Gas Law, if a certain amount of gas is being held at a consta...

Which of the following setups would convert centimeters to feet? (2.54 cm=1 inch) correct answers 1 centimeter X 1 inch/2.54 centimeters X 1 foot/12 inches How would you classify raisin bran? correct answers Mixed-heterogeneous Which atom has the largest number of neutrons? a) phosphorus-30 b) chlorine-37 c) potassium-39 d) argon-40 e) calcium-40 correct answers d) argon-40 [40-18=22 neutrons] Select the false statements from the following i) Elements are arranged by increasing at...

General Chemistry Placement Test, With Complete Solutions Updated | 20242024. molecule two nonmetal atoms combined form a covalent compound called a diatomic molecules H2,O2,F2 Matter Anything that has mass and takes up space Element A substance that cannot be broken down into simpler substances Compound A pure substance made of two or more elements CHEMICALLY combined. Compound Can be decomposed by chemically Mixture A PHYSICAL blend of two or more components (aq) aqueous mi...

Praxis 2: 5005 Multiple Subjects: Practice Test 2 Science Questions and Answers 100% Pass What is the term for the thick layer surrounding Earth's outer core? Mantle Which of the following two gasses compose the vast majority of the Earth's atmosphere? Nitrogen and Oxygen Which of the below is an example of metamorphic rock? Schist Mountains are most likely to form along which type of plate boundary? Convergent Approximately how long ago did the first anatomically modern humans appear on t...

Plasma - Answer ionized gas that has some electrons that are described as free because they are not bound to an atom or molecule specific gravity - Answer measurement of the density of substances in a liquid compared to water atomic theory - Answer a theory that states that all matter is composed of tiny particles called atoms. John Dalton - Answer developed modern atomic theory negative ion - Answer anion, gains electrons positive ion - Answer cation; loses electrons ionic bon...

Chapter 03 - Electronic Structure and the Periodic Law 1. Which of the following elements is found in the same period of the periodic table as tin? a. silicone ANSWER: POINTS: QUESTION TYPE: HAS VARIABLES: DATE CREATED: DATE MODIFIED: b. arsenic c. tellurium c 1 Multiple Choice False 3/4/2016 3:37 PM 3/4/2016 3:37 PM d. technetium 2. Which element is the first one in the group IVA(14) of the periodic table? a. C ANSWER: POINTS: QUESTION TYPE: HAS VARIABLES: DATE CREATED: DATE MODIFIE...

CHEMISTRY: The Central Science 12TH EDITION Brown, LeMay, Bursten Murphy Woodward TEST BANK ISBN-978-4 This is a Test Bank (Study Questions & Complete Answers for all chapters of the book) to help you study for your Tests. Test banks can give you the tools you need to help you study better. Table of Contents 1 Introduction: Matter and Measurement 2 Atoms, Molecules, and Ions 3 Stoichiometry: Calculations with Chemical Formulas and Equations 4 Reactions in Aqueous Solution 5 Thermochemistry 6 Ele...

Chemistry 103 Final Exam SOLUTIONS 100% CORRECT ANSWERS Tin's atomic number is 50. This means that all tin atoms have? a. 50 protons in the nucleus b. 50 total neutrons in the nucleus c. a total of 50 subatomic particles in the nucleus d. 50 electrons - ANSWER a after the 4s subshell of an atom is filled with electrons, the next electron added will enter the... a. 3d subshell b. 4d subshell c. 4p subshell d. 5s subshell - ANSWER a in which of the following pairs of elements are ...

Netflix has 100 million subscribers. Which of the following trends is most responsible for their success? A) Digitization Law B) Ubiquitous network access C) Digital computers are increasingly complex D) Declining storage cost -ANSWER B) Ubiquitous network access If you hear the statistic: 'There are almost 3 billion smartphones in use in the world today.' Which of the following trend is it most closely related to? A) Cost of computing power have decline B) Ubiquitous network access ...