The Atom.

Slides:

Advertisements

Similar presentations

Atoms, Elements, Compounds, and Ions Atom basic building block of all matter Element Substance that consists of only one type of atom. Molecule has two.

Advertisements

Chapter 6-2 part 1 The Atom.

Identify and describe the particles that make an atom.

Atomic Structure Nucleus – contains protons and neutrons

The Periodic Table. Define the following terms. 1. proton 2. neutron 3. electron 4. nucleus.

Copyright © by Holt, Rinehart and Winston. All rights reserved. Section 3 How Atoms Differ.

Elements  There are 118 elements  An element is made of 1 type of atom.  Elements have different properties because their atoms are different  Elements.

Chapter 4 - Part 2 Protons, neutrons and electrons are all subatomic particles. Protons are positive (+) charged particles found in the nucleus of an atom.

Atoms 8.5A The student is expected to describe the structure of atoms, including the masses, electrical charges, and locations, of protons and neutrons.

Explaining the Periodic Table (6.7) If elements are the building blocks of all other matter, what are they made of? There are three particles that make.

Atomic Structure. Inside an Atom Over time, scientists have come up with many theories about the inside of atoms. Today we believe that an atom has a.

Mass Number Atomic Number equals the # of... NUCLEUS ELECTRONS PROTONS NEUTRONS NEGATIVE CHARGE POSITIVE CHARGE NEUTRAL CHARGE ATOM.

The Structure of an Atom

Building Blocks 1c Int

The Atom Chapter 4.2. Atoms: Are the smallest unit of an element that maintains the properties of that element. All atoms have a diameter of

Atomic Structure Notes Atomic Structure Subatomic particles include ________, _________ and _________. protons neutrons electrons ________ and.

ATOMS Basic building blocks of all matter.

Ch. 11 Section 2 The Atom. Vocabulary To Know  Proton- subatomic particle that has a positive charge and that is found in the nucleus  Atomic mass unit-

Head a paper for class notes Record all drawings and data charts in notes Record any writing that is in yellow You do not need to record all of the examples.

Ions, Complete Chemical Symbols and Isotopes. Every element is made up of very small particles called atoms. Atoms of different elements have a different.

The Atom 1.Parts of the atom 2.How to draw an atom.

Anatomy of the Atom. Subatomic Particles In each atom there are three subatomic particles: ParticleLocationChargeSize/MassSymbol Proton Inside the nucleus.

Determining the NUMBER of Protons Electrons and Neutrons in Atoms, Ions, and Isotopes.

Bell Ringer THINK BACK TO LAST CLASS & The History of the Atom! WITHOUT using your notes match the scientist to the correct statement that describes his.

 Atomic Number- the number of protons in the nucleus of an atom of that element  Ex: Hydrogen atoms have only one proton in the nucleus, so the atomic.

 The smallest part of an element that retains the properties of that element  How Small is an atom? 20,000,000,000,000,000,000,000 atoms of copper and.

What Makes Up a Atom?. Atoms are the smallest unit of matter. Atoms are the smallest unit of matter. Atoms CANNOT be divided! Atoms CANNOT be divided!

Structure of Atoms. Originally scientists thought that atoms could not be split into anything smaller. We now know that atoms are made up of smaller particles.

ATOM NEUTRONS Charge: none Mass: 1 amu Location: nucleus ELECTRONS Charge: negative Mass: zero Location: electron cloud PROTONS Charge: positive Mass:

Atom Review 1.What are the 3 subatomic particles? 2.What atom is the amu based on? 3. What is located in the nucleus of the atom? 4. What is the nuclear.

The building blocks of matter! ©2011 University of Illinois Board of Trustees

ATOMS. What are elements made of? What makes up ALL matter? ATOMS!! You have 2 minutes to write down everything you know about atoms! Draw a circle on.

ELECTRONS!!! Parts of an atom. Electrons Negative charge Located outside the nucleus in an electron cloud They are organized into shells Move very quickly.

Periodic Table of Elements

Atomic Structure Test Review 166 point total. 1.The atomic number is the number of protons. 2. The mass number is the number of protons and neutrons.

Atoms, Elements, Compounds, and Ions Atom basic building block of all matter Element Substance that consists of only one type of atom. Molecule has two.

Atoms Atom- the smallest part of an element Atoms of one element are different from another element. contains protons, electrons, and neutrons Atomic Mass.

The Atom: Structure. Inside the Atom Electrons Protons Neutrons Nucleus Beryllium Atom.

Notes #3 Introducing………The Atom!. History of the Atom A. Democritus (400 BC) – 1. Said matter is made of invisible particles called atoms – 2. The atoms.

Structure of an Atom. The Three subatomic particles of an atom: Proton Neutron Electron.

Unit 3: The Atom. Atoms All matter is made of very tiny particles All matter is made of very tiny particles These particles have the same properties as.

The Atom cont. Key to the Periodic Table n Elements are organized on the table according to their atomic number, usually found near the top of the square.

Subatomic Particle SymbolChargeMass (amu) Where is it found? Atomic mass unit (AMU)- the SI unit used to express the mass of the particles in an atom.

Atomic Mass. Each element found on the periodic table of elements is given an atomic mass The atomic mass tells you the average mass of the atoms of an.

Parts of an Atom. First off, what is an atom? Atoms are the smallest parts to which an element can be divided yet still be that element. Atoms are the.

Parts of the Atom: Properties  Protons: –Positive charge –Located in nucleus –Mass = 1 amu (Atomic Mass Unit)  Neutrons –No charge (neutral) –Inside.

The Structure of an Atom

ELECTRONS. Review Electrons were discovered by ______________ Electrons have a ___________ charge Electrons are located…. Outside of the nucleus in an.

3-1 Inside Atoms Pages nucleus p 76 central core of an atom containing protons and usually neutrons.

ATOMS. What are elements made of? What makes up ALL matter? ATOMS!! You have 2 minutes to write down everything you know about atoms! Draw a circle on.

The Structure of the Atom. 1.The Atom a. “the building blocks” of all matter b. Particles that make up the atom: 1.Nucleus a. “core” of the atom b

Atoms, Elements, & Compounds. Elements Element --- any substance that can’t be broken down into simpler substances. Example of an element --- Oxygen,

1 What is an atomic number and an atomic mass?. 2 Elements and Atomic Number The atoms of different elements have different numbers of protons. The atoms.

1 The Atom Atomic Number and Mass Number Isotopes.

How small is an atom?  An Atom is the smallest particle into which an element can be divided and still be the same substance.  Atoms are made of three.

Atomic Structure Nat

INTRODUCTION TO ATOMS CHAPTER 3 section 1.

Foldables: Atoms Terms.

Do you know the first 20 elements and their symbol?

e- p+ n0 0 amu 1 amu 1 amu Electron proton Neutron

Chapter 6-2 part 1 The Atom.

Atomic Structure Nucleons Atomic Number

How do the parts of an atom influence the elements?

Chapter 6-2 part 1 The Atom.

Presentation transcript:

The Atom

How big is an Atom? That’s Small!!!! The average size atom (Al) is about 0.00000003 cm. It would take a stack of 50,000 aluminum atoms to equal the thickness of a sheet of aluminum foil. That’s Small!!!!

What’s Inside an Atom? An atom is made up of a team of three players: protons, neutrons, and electrons They each have a charge, mass, and a location

Protons... Charge: positive Mass: 1 amu (atomic mass unit) Location: Nucleus

Neutrons... Charge: none Mass: 1 amu (atomic mass unit) Location: Nucleus

Electrons... Charge: negative Mass: almost zero Location: electron clouds

Electrons vs Protons The electron’s negative charge is the same size as a proton’s positive charge. They cancel each other out: +1 -1 = 0 Atoms like to have 0 charge.

Questions... What particles are in the nucleus? Explain why atoms are neutral. Why do scientists say that most of the mass of an atom is located in the nucleus?

How Do Atoms of Different Elements Differ? Lets compare a Hydrogen atom and a Helium atom…

Hydrogen... Draw one proton. Draw a circle around the proton. Place one electron on the circle. You have just created a hydrogen atom! Hydrogen has no neutrons.

Helium Draw two protons and two neutrons all together. Draw an electron orbit around them. Place two electrons on the orbit. You have just created a helium atom!!!

What is different? The two different elements have different numbers of electrons, protons, and neutrons. OK...

Are all atoms of an element the same? Draw another Hydrogen atom, but this time add a neutron. It is still Hydrogen because it has only one proton, but it has more mass in the nucleus. It is called an isotope.

What is an Isotope? Isotope - atoms that have the same number of protons but have different numbers of neutrons. Some isotopes are radioactive. Otherwise they are mostly the same as the regular atom.

How can you tell one isotope from another? By their mass numbers. mass number = protons + neutrons. Different isotopes will have different mass numbers because they have different numbers of neutrons.

Let’s see... Hydrogen-1 has 1 proton and 0 neutrons. Mass Number = 1

Questions… List the charge, location, and mass of each particle. Determine the number of protons, electrons, and neutrons in aluminum-27.