Atom : The smallest particle of an element that keeps all the properties of that element.

9
Atom: The smallest particle of an element that keeps all the properties of that element. Lesson: Old Dead Guys

description

Lesson : Old Dead Guys. Atom : The smallest particle of an element that keeps all the properties of that element. Dalton’s Theory (Postulates) All matter made of tiny particles called atoms All atoms of the same element are the same - PowerPoint PPT Presentation

Transcript of Atom : The smallest particle of an element that keeps all the properties of that element.

Page 1: Atom : The smallest particle of an element that keeps all the properties of that element.

Atom: The smallest particle of an element that keeps all the properties of that element.

Lesson: Old Dead Guys

Page 2: Atom : The smallest particle of an element that keeps all the properties of that element.

Dalton’s Theory (Postulates)

• All matter made of tiny particles called atoms

• All atoms of the same element are the same

• Atoms can’t be created or destroyed, or divided into smaller parts

• Different atoms combine to make compounds

• Atoms are rearranged during chemical changes

Page 3: Atom : The smallest particle of an element that keeps all the properties of that element.

JJ Thomson

• Cathode Ray Tube experiment

• Found out the glowing beam in the tube had a negative charge

• Discovered electrons

Page 4: Atom : The smallest particle of an element that keeps all the properties of that element.

• Thomson’s Theory: Electrons are spread out in a large positive mass.

Called the Plum Pudding

Model

Page 5: Atom : The smallest particle of an element that keeps all the properties of that element.

Rutherford’s Gold Foil Experiment• Fired particles at gold foil• Some particles bounced back• Why? Because of the dense central nucleus

Page 6: Atom : The smallest particle of an element that keeps all the properties of that element.

This is Thomson’s idea of an atom. Rutherford thought all the particles would pass straight through the atoms.

This is what Rutherford found out: There is a dense nucleus in the middle of the atom.

Page 7: Atom : The smallest particle of an element that keeps all the properties of that element.

But what stops the electrons from joining the nucleus? Positive and negative attract…

Rutherford’s Model

Page 8: Atom : The smallest particle of an element that keeps all the properties of that element.

Bohr’s Model• The electrons must be in energy levels, orbiting around the nucleus.

• The electrons can change energy levels depending on their energy

Planetary Model

Page 9: Atom : The smallest particle of an element that keeps all the properties of that element.

Millikan’s Oil Drop Exp.Discovered the mass – to –charge ratio of an electron


The Elements of Art Point ~ the smallest element, the center, a dot Point ~ the smallest element, the center, a dot.

The Elements of Art Point ~ the smallest element, the center, a dot Point ~ the smallest element, the center, a dot.

Atomic Theory Modern Model. atom (page 313) smallest part of an element that has all the properties of the element.

Atomic Theory Modern Model. atom (page 313) smallest part of an element that has all the properties of the element.

THE ATOM Smallest part of an element that has all of the properties of that element.

THE ATOM Smallest part of an element that has all of the properties of that element.

Selection Sort Alyce Brady Kalamazoo College. Selection Sort sort this Find the smallest element. Swap it with the first element. Find the next smallest.

Selection Sort Alyce Brady Kalamazoo College. Selection Sort sort this Find the smallest element. Swap it with the first element. Find the next smallest.

Fundamentals of Chemistry Chapter 2. What Are Atoms? Smallest particles that retain properties of an element, smallest particle of a substance Made up.

Fundamentals of Chemistry Chapter 2. What Are Atoms? Smallest particles that retain properties of an element, smallest particle of a substance Made up.

Why Study Chemistry in Biology?. I. Atoms Definition: smallest particle of an element.

Why Study Chemistry in Biology?. I. Atoms Definition: smallest particle of an element.

Matter. Day 1 How is matter organized ? The smallest particle of an element that still retains the properties of the element. atom.

Matter. Day 1 How is matter organized ? The smallest particle of an element that still retains the properties of the element. atom.

ATOMS… Atoms Is the smallest particle characterizing a chemical element. Also defined as the smallest portion of an element that retains all the properties.

ATOMS… Atoms Is the smallest particle characterizing a chemical element. Also defined as the smallest portion of an element that retains all the properties.

Atomic Structure. The Atoms Family Atom: the smallest part of an element. Name means “indivisible”

Atomic Structure. The Atoms Family Atom: the smallest part of an element. Name means “indivisible”

ATOMS. Atom Smallest part of any element that contains all properties of that element.

ATOMS. Atom Smallest part of any element that contains all properties of that element.

Atomic History and Theories Atom Definition: the smallest particle of any element that retains the properties of that element.Definition: the smallest.

Atomic History and Theories Atom Definition: the smallest particle of any element that retains the properties of that element.Definition: the smallest.

Atoms Radioactivity Half-Life. An atom is the smallest particle of an element that has all of the properties of that element.

Atoms Radioactivity Half-Life. An atom is the smallest particle of an element that has all of the properties of that element.

Atoms Smallest electrically neutral particle of an element that retains the properties of that element.

Atoms Smallest electrically neutral particle of an element that retains the properties of that element.

Chemistry of Life. Atoms Greek for “indivisible” Smallest possible particle of an element element Made up of Proton (+) Neutron(=)Electron(-) Nucleus=

Chemistry of Life. Atoms Greek for “indivisible” Smallest possible particle of an element element Made up of Proton (+) Neutron(=)Electron(-) Nucleus=

Atom Definition: the smallest particle of any element that retains the properties of that element. Definition: the smallest particle of any element that.

Atom Definition: the smallest particle of any element that retains the properties of that element. Definition: the smallest particle of any element that.

Lesson 1: What are atoms and elements?. The smallest unit of an element that has the properties of that element.

Lesson 1: What are atoms and elements?. The smallest unit of an element that has the properties of that element.

2015. The smallest piece of an element that still is that element. Example: the smallest piece of gold that still is gold. Made of protons, neutrons.

2015. The smallest piece of an element that still is that element. Example: the smallest piece of gold that still is gold. Made of protons, neutrons.

Chapter 4: Section 1. The Atom is the smallest particle of an element.

Chapter 4: Section 1. The Atom is the smallest particle of an element.

Chapter 2 The Chemistry of Life. atom I. atom-smallest part of an element.

Chapter 2 The Chemistry of Life. atom I. atom-smallest part of an element.

Atomic Theory. The Atom Recall the atom is the smallest particle making up an element.

Atomic Theory. The Atom Recall the atom is the smallest particle making up an element.