SCH4C Unit 1 Practice Quiz 2

Similar documents
SCH4C Practice WS Unit 1

Atomic Theory. Developing the Nuclear Model of the Atom. Saturday, January 20, 18

EARLY VIEWS: The Ancient Greeks

Atomic Structure 11/9/04 Name

CHEMISTRY 11 UNIT REVIEW: ATOMIC THEORY & PERIODIC TRENDS

SNC1D1 History of the Atom

Card 1 Chapter 18. Card 2. Chapter 18. Negative particles that surround the nucleus (like planets around the sun)

Particle Theory of Matter. By the late 1700s, scientists had adopted the Particle Theory of Matter. This theory states that:

HISTORY OF THE ATOM ATOMA

Unit 1, Lesson 01: Summary of Atomic Structure so far

Unit 3 Lesson 1 The Atom. Copyright Houghton Mifflin Harcourt Publishing Company

History and Structure of the Atom. From Democritus to...

Make sure this is handed in!

Atomic Theory. Early models

The History of the Atom. How did we learn about the atom?

The Development of Atomic Theory

Unit 3. The Atom & Modern Atomic Theory

Atomic Structure Discovered. Dalton s Atomic Theory. Discovery of the Electron 10/30/2012

a. According to Dalton, what is inside the atom? Nothing, the atom it the smallest

SNC1D CHEMISTRY 2/8/2013. ATOMS, ELEMENTS, & COMPOUNDS L Atomic Theory (P ) Atomic Theory. Atomic Theory

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms

Notes:&&Unit&4:&Atomics& & & & & & & & & & & & & & & & &

2/28/2016 ATOMS) ATOMS. Physics 2D. PHYS 342 Modern Physics Atom I: Rutherford Model and Bohr Model

The term valent means outermost, therefore only the electrons on the outermost shell are called valent.

Atomic Theories Chapter 4.1. How do we know about atoms when no one has ever seen inside an atom?

Chapter 3. Atom. Table of Contents. 1. Atom and History of Atom 2. Subatomic Particles 3. Isotopes 4. Ions 5. Atomic Terminology

Chem 1075 Chapter 5 Models of the Atom Lecture Outline

H CHEM - WED, 9/7/16. Do Now Be ready for notes. Sigfig review problem. Agenda Atomic Theory. Homework. Error Analysis

1. Based on Dalton s evidence, circle the drawing that demonstrates Dalton s model.

PROGRESSION OF THE ATOMIC MODEL

NOTES ON CHAPTER 4: ELEMENTS AND THE PERIODIC TABLE. 4.1 Introduction to Atoms

What is a theory? An organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

Dalton Thompson Rutherford Bohr Modern Model ("Wave. Models of the Atom

Atomic Structure. History of Atomic Theory

An Introduction to Atomic Theory. VCE Chemistry Unit 1: The Big Ideas of Chemistry Area of Study 1 The Periodic Table

Atomic Theory Development

Atomic Structure. A model uses familiar ideas to explain unfamiliar facts observed in nature.

Time to develop a model

Memorial to a Scientist

Question 1: What are canal rays? Answer: Canal rays are positively charged radiations. These rays consist of positively charged particles known as

Democritus & Leucippus (~400 BC) Greek philosophers: first to propose that matter is made up of particles called atomos, the Greek word for atoms

BEGINNING OF ATOMIC THEORY

Chapter 3 Atomic Diary

Nuclear Chemistry. Atomic Structure Notes Start on Slide 20 from the second class lecture

The Atom. Describe a model of the atom that features a small nucleus surrounded by electrons.

1. Ionisation of gases in the discharge tube proved that atoms have subatomic particles

Ch4 and Ch5. Atomic History and the Atom

The Story of the Atom. A history of atomic theory over many years

Do Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester?

Chapter 3 tphzzyuwy6fyeax9mqq8ogr

Chapter 4 Lesson 2 Notes

In many ways, Dalton's ideas are still useful today. For example, they help us to understand elements, compounds, and molecules.

Atomic Theory. Democritus to the Planetary Model

Atomic Structure. For thousands of years, people had many ideas about matter Ancient Greeks believed that everything was made up of the four elements

ATOM. Rich -Paradis. Early Thoughts Aristotle-- Continuous theory. Matter can be divided indefinitely. Greeks

7.1 Development of a Modern Atomic Theory

Atoms, Elements, and the Periodic Table Part 1: The Atomic Model

DEMOCRITUS - A philosopher in the year 400 B.C. - He didn t do experiments and he wondered if atoms kept on being divided, that there would only be

Development of Atomic Theory Elements of chemistry- Atoms, the building blocks of matter Video

The structure of Atom III

What is the current atomic model?

Chap 4 Bell -Ringers

Investigating Atoms and Atomic Theory

Where it came from and what we know now

Rhonda Alexander IC Science Robert E. Lee

Unit 1 Part 1 Atomic Structure and The Periodic Table Introduction to Atomic Structure UNIT 1 ATOMIC STRUCTURE AND THE PERIODIC TABLE

Atomic Structure Early Theories Democritus: 4 B.C.: atom Dalton: atoms cannot Thomson: Cathode Ray Tubes Rutherford:

UNIT 2 - ATOMIC THEORY

Democritus thought atoms were indivisible & indestructible Lacked experimental support 4 th century B.C.

Early Ideas About Matter

CHEMISTRY 11 UNIT REVIEW: ATOMIC THEORY & PERIODIC TRENDS

Chapter 4. Models of the Atom

Do Now: Recall 1. What is an atom? What have you learned about the word atom so far this semester?

Hot Sync. Materials Needed Today

CHAPTER -4 STRUCTURE OF ATOM CONCEPT DETAILS

Atomic Structure ATOMIC STRUCTURE. All matter is composed of atoms.

UNIT 2 - ATOMIC THEORY

3.1 Early History of Atomic Theories

Glencoe: Chapter 4. The Structure of the Atom

The idea of an atom began about 400 B.C. with many Greek philosophers, like Democritus, working to figure out what everything was made of.

Atomic Theory Timeline

Bellwork: 2/6/2013. atom is the. atom below. in an atom is found in the. mostly. 2. The smallest part of an. 1. Label the parts of the

Atomic Theory. Introducing the Atomic Theory:

The Development of Atomic Theory

Introduction to Nuclei I (The discovery)

10. What word is used to describe properties of a substance that depend on the quantity of substance? Give two examples of such properties.

Structure of the Atom. Intext Exercise 1

Models of the Atom. Spencer Clelland & Katelyn Mason

Name: Date: Blk: Dalton Thomson Rutherford Bohr THOMSON

CLIL Content Language Integrated Learning

Honors Ch3 and Ch4. Atomic History and the Atom

I. History and Development of the Atom

INTRODUCTORY CHEMISTRY Concepts & Connections

Atomic Structure. All matter is composed of atoms. Understanding the structure of atoms is critical to understanding the properties of matter.

4/14/2013 ATOMIC STRUCTURE THE ATOMIC MODEL

DEVIL PHYSICS THE BADDEST CLASS ON CAMPUS IB PHYSICS

Unit 3: The Atom Part 1. DUE: Friday October 13, 2017

: the smallest particle that has the properties of an element. In, this Greek philosopher suggested that the universe was made of.

Chapter 28. Atomic Physics

Preview. Atomic Physics Section 1. Section 1 Quantization of Energy. Section 2 Models of the Atom. Section 3 Quantum Mechanics

Transcription:

Name: Class: Date: 2009-2010 SCH4C Unit 1 Practice Quiz 2 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. The smallest particle of an element that has all the properties of the element is A) an atom C) a particle B) a molecule D) a compound 2. In Thomson s raisin bun model, A) the dough represents the positively charged sphere, and the raisins represent the negatively charged electrons B) the dough represents the negatively charged sphere, and the raisins represent the positively charged electrons C) the dough represents an uncharged sphere, and the raisins represent the negatively or positively charged electrons D) none of the above 3. By conducting his gold foil experiment, Ernest Rutherford discovered A) the electron C) the nucleus B) the neutron D) the alpha particle 4. The nucleus is A) the negatively charged centre of the atom B) the positively charged centre of the atom C) the negatively charged outer region of the atom D) the positively charged outer region of the atom 5. The electron was discovered by 6. The proton was discovered by 7. The neutron was discovered by 8. Neutrons are A) found in the nucleus C) similar in mass to protons B) uncharged D) all of the above 9. Atoms of the same element that have a different number of neutrons are called A) isobars C) isotones B) isomers D) isotopes 10. The billiard ball model of the atom was proposed by 11. The raisin bun model of the atom was proposed by 12. The nuclear model of the atom was first proposed by 13. According to the law of electric charges, Rutherford s atom should have A) emitted ultraviolet light C) collapsed B) been very stable D) emitted X-rays 14. Niels Bohr was able to explain the line spectrum of A) helium C) neon B) hydrogen D) sodium 15. Bohr s theory is based on the fact that an electron s energy is A) negligible C) always the same B) very large D) quantized 16. Bohr compared the electrons in an atom to A) raisins in a bun C) planets orbiting the sun B) bees around a beehive D) stars in the sky 17. When an electron gains a specific amount of energy, A) it moves to a higher energy level C) it moves to its ground state B) it gives off light energy D) none of the above 1

Name: 18. An electron that occupies a higher energy level than normal is said to be in A) the wrong energy level C) a higher state B) an excited state D) the ground state 19. Electrons in their ground state A) are not moving C) do not emit any light energy B) give off light energy continually D) none of the above 20. Bohr s model was successful because A) it could explain the line spectrum of hydrogen B) it introduced the idea of quantized energy C) it explained why the atom did not collapse D) all of the above 21. Bohr s model was not the perfect model of the atom because it only explained A) the nucleus B) the line spectra of the first 20 elements C) the innermost electrons D) the line spectrum of hydrogen 22. Bohr predicted that each energy level could hold a maximum number of electrons. How many electrons could the first three energy levels hold? A) 2, 2, 6 C) 2, 4, 6 B) 2, 8, 8 D) 2, 4, 8 23. The diagram above represents an atom whose electron is A) moving from the ground state to an excited state B) moving from an excited state to the ground state C) absorbing a quantum of energy D) none of the above 24. In the diagram above, the amount of electromagnetic radiation given off by the electron falling to a lower energy level will depend upon A) the element B) the number of electrons in the atom C) the energy difference in the energy levels D) nothing; it is always the same 25. The model of the atom, where electrons are in fixed orbits about the nucleus, was proposed by Short Answer 26. Although Dalton s model of the atom was very similar to the atom described by Democritus in the fifth century B.C., why is Dalton s model often considered the first atomic theory? 27. List the main ideas of Dalton s atomic theory. 28. Briefly outline Rutherford s model of the atom, and identify the main downfall of the model. 29. What observations did Rutherford make during his gold foil experiment, and what did he infer from these observations? 30. Explain how quantization of energy is analogous to a ball on a flight of steps. 31. According to Bohr s theory, how many electrons can be in each of the first three energy in levels in order for the atom to be stable? 32. Why was Bohr s model considered both a success and a failure? 2

2009-2010 SCH4C Unit 1 Practice Quiz 2 Answer Section MULTIPLE CHOICE 1. ANS: A 2. ANS: A REF: I OBJ: 1.3 LOC: MQ1.03 3. ANS: C 4. ANS: B 5. ANS: A 6. ANS: C 7. ANS: D 8. ANS: D 9. ANS: D 10. ANS: A 11. ANS: B 12. ANS: C 13. ANS: C REF: I OBJ: 1.6 LOC: MQ1.03 14. ANS: B REF: I OBJ: 1.6 LOC: MQ1.03 15. ANS: D REF: I OBJ: 1.6 LOC: MQ1.03 16. ANS: C REF: I OBJ: 1.6 LOC: MQ1.03 17. ANS: A REF: K/U OBJ: 1.6 LOC: MQ1.03 18. ANS: B REF: K/U OBJ: 1.6 LOC: MQ1.03 19. ANS: C REF: K/U OBJ: 1.6 LOC: MQ1.03 20. ANS: D REF: I OBJ: 1.6 LOC: MQ1.03 21. ANS: D REF: I OBJ: 1.6 LOC: MQ1.03 22. ANS: B REF: K/U OBJ: 1.6 LOC: MQ1.03 23. ANS: B REF: I OBJ: 1.6 LOC: MQ1.03 24. ANS: C REF: I OBJ: 1.6 LOC: MQ1.03 25. ANS: D REF: K/U OBJ: 1.6 LOC: MQ1.03 SHORT ANSWER 26. ANS: - Dalton s model was based on experimental evidence, while Democritus proposed his theory without experimentation 27. ANS: - matter consists of definite particles called atoms - each element is made up of its own type of atom - atoms of different elements have different properties - atoms of two or more elements can combine in constant ratios to form new substances - atoms cannot be created or destroyed or subdivided in a chemical change 28. ANS: - Rutherford s model had a positive core (nucleus), with negatively charged electrons around it occupying the remaining space - his model could not explain why the electrons did not spiral into the nucleus and cause the atom to collapse 29. ANS: - Rutherford observed that most of the alpha particles passed straight through the foil but some were deflected or reflected by the thin gold foil - he inferred that a small part of the atom, containing most of its mass, must have a dense positive charge to repel the positively charged alpha particle REF: K/U OBJ: 1.3 LOC: MQ1.01, MQ1.03 1

30. ANS: - the ball on the steps is restricted to specific levels; it cannot sit between steps - the ball can only possess fixed amounts (quanta) of energy, specific to each step REF: I OBJ: 1.6 LOC: MQ1.03 31. ANS: energy level 1 2 energy level 2 8 energy level 3 8 REF: K/U OBJ: 1.6 LOC: MQ1.03 32. ANS: - it was able to explain the line spectrum of hydrogen but no other elements - it was a breakthrough model in which electrons had quantized energy levels REF: I OBJ: 1.6 LOC: MQ1.03 2

2009-2010 SCH4C Unit 1 Practice Quiz 2 [Answer Strip] B 18. C 19. A 1. D 20. A 2. D 21. C 3. B 22. B 4. A 5. C 6. D 7. B 23. D 8. C 24. D 9. A 10. D 25. B 11. C 12. C 13. B 14. D 15. C 16. A 17.

2024 © sciencedocbox.com Privacy Policy | Terms of Service | Feedback