Quantum Warmup #1 1) What is the difference between an electron orbit as described by Bohr and orbital described by modern quantum theory? Answer: orbit.

Slides:

Advertisements

Similar presentations

Chemistry Daily 10’s Week 5.

Advertisements

What produces the different colors in a fireworks display?

Modern Atomic Theory Chapter  Nucleus surrounded by a large volume of space  like Rutherford's model of 1911  Focused on the arrangement.

4-3 Cornell Bohr’s Model of the Atom Energy Levels

What can happen when an atom absorbs energy?

Introduction to Excited Elements Lab

Chapter. 5: Electrons in Atoms

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Bohr’s Model of the Atom

The Atom. Atomic States An atom can be in one of two states: 1.Ground State: When an atom has the lowest possible amount of energy. 2.Excited State: When.

Chapter 4 Electrons. ELECTRON BEHAVIOR Who made this model of the atom?

Modern Atomic Theory 4.3. Bohr’s model A. Concentrated on placement of electrons around the nucleus B. Looks like planets revolving around the sun.

Evidence of Energy Levels. e-e- e-e- Ground state Excited state Electrons can only be at specific energy levels, NOT between levels.

Warm-Up Lithium has an atomic weight of g/mol. When g of lithium is heated, it emits an energy measured at 262,500 joules. What is the energy.

Explain why different colors of light result

Section 4.3 Modern Atomic Theory

Section 4-1 Continued.  Ground State – the lowest energy state of an atom  Excited State – a state in which an atom has a higher energy than in its.

Electromagnetic Spectrum Section 1 The Development of a New Atomic Model Chapter 4.

Quantum Theory and the Atom In the early 1900s, scientists observed certain elements emitted visible light when heated in a flame. Analysis of the emitted.

Section 3: Modern Atomic Theory

AtomsSection 3 Modern Models of the Atom 〉 What is the modern model of the atom? 〉 In the modern atomic model, electrons can be found only in certain energy.

Section 11.2 The Hydrogen Atom 1.To understand how the emission spectrum of hydrogen demonstrates the quantized nature of energy 2.To learn about Bohr’s.

Aim: How do chemists represent an atom’s “electron configuration”? Vocabulary: Electron configuration- probable location of electron; the electron’s “address.”

Chapter 11 Modern Atomic Theory. Rutherford’s Atom What are the electrons doing? How are the electrons arranged How do they move?

1 Modern Atomic Theory. 2 In the Rutherford model electrons traveled about the nucleus in an orbit. The Problem with Rutherford Scientists know that just.

4.3 The Modern Atomic Theory. Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain.

The Bohr Model of the Atom

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

The Bohr Model of the Atom

2-7 Spectroscopy ElectronOrbits.exe.

Interpretation of Hydrogen Emission Spectra

What’s wrong with this picture?

The Bohr Model, Wave Model, and Quantum Model

LT1: Electron Arrangement (Ch. 5)

The Development of a New Atomic Model

Quantum Theory & the Atom

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Nobel-ity, Part 1 How do chemists design stable compounds?

Interpretation of Hydrogen Emission Spectra

The Modern Atomic Theory

Chapter 5 Electrons in Atoms.

Electrons in Atoms.

0:56 0:55 0:54 0:53 0:57 0:58 1:02 1:01 1:00 0:59 0:52 0:51 0:44 0:43 0:42 0:41 0:45 0:46 0:50 0:49 0:48 0:47 1:03 1:04 1:19 1:18 1:17 1:16 1:20 1:21 1:25.

Electrons orbit the nucleus only within allowed energy levels.

Electron Configurations & Quantum Numbers

The Bohr Model (1913) revolve sun energy

Bohr’s Model Why don’t the electrons fall into the nucleus?

Quantum Warmup #1 1a) Describe what is observed when salts of Li, Na, Cu, Sr and K are heated strongly in a flame. 1b) Write an essay using the word bank.

Ch. 4/5 Notes Day 5 2/2/16.

Energy and Electrons energy

The Bohr Model of the Hydrogen Atom

Bohr’s Model of the Atom

ELECTRONS IN ATOMS.

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Warm-Up Use the information below to answer the following questions:

M. Billings North Surry High School

Learning Outcomes Emission and absorption spectra of the hydrogen atom . Balmer series in the emission spectrum as an example. Line spectra as evidence.

Section 3: Modern Atomic Theory

12.2 Learning Goals Compare spectra of elements.

Bohr, Emissions, and Spectra

Key Concepts What can happen to electrons when atoms gain or lose energy? What models do scientists use to describe how electrons behave in atoms? What.

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Have you ever wondered what produces the different colors in a fireworks display? Certain compounds will produce certain colors of light when they are.

Interpretation of Hydrogen Emission Spectra

Section 3: Modern Atomic Theory

Modern Atomic Theory Chapter 4 Section 3.

Aim: How are electrons arranged in an atom?

The Nature of Electrons

Presentation transcript:

Quantum Warmup #1 1) What is the difference between an electron orbit as described by Bohr and orbital described by modern quantum theory? Answer: orbit = precisely defined path orbital = region of space around nucleus in there is a high (90% probability of finding an electron)

Orbital: a region of space (3D) where there is a high (90%) probability of locating an electron. Orbital ≠ Orbit

Warmup #1 2a) Describe what is observed when salts of Li, Na, Cu, Sr and K are heated strongly in a flame. 2b) Write an essay using the word bank below and draw a labeled diagram to support your answer that explains what is happening inside the atom that produces the different colors of light. Word Bank: Atoms, Heat Energy, Electrons, Quantized Energy Levels, Absorb Energy, Ground State, Quantum Leap, Excited State, Emits Light Energy, Different colors of light

Link to flame tests Fireworks Lithium Copper Strontium

Sample answer Each atom contains electrons with quantized energy levels, meaning only certain specific energy values are allowed. When heat energy from the flame is added to the atoms, the electrons absorb the energy. Electrons in the ground state (lowest energy quantum level) absorb the energy and make a quantum leap to higher energy excited states. The electrons are only able to remain in the excited state for a very brief time. When electrons make a quantum leap from a higher energy excited state to a lower state, they emit (release) the exact difference in energy between the excited state and ground state in the form of light. The different colors of light emitted are the result of different energies between excited and ground states.

Diagram of Quantum Leaps Absorption of Heat Energy Emission of Light Energy e- EXCITED STATE e- GROUND STATE