Parts of an Atom An atom consists of a nucleus surrounded by one or more electrons The nucleus is the center region of the atom where the protons and neutrons.

Slides:

Advertisements

Similar presentations

PS-2.1 Compare the subatomic particles of an atom with regard to mass, location, and charge, and explain how these particles affect the properties of an.

Advertisements

Structure of an Atom.

Chapter 16 The Periodic Table

Atoms Matter Lecture #2. I. Structure of the Atom A. There are 3 main parts the the atom (subatomic particles) 1. Proton (+): has a positive charge and.

The Atom. Matter Is anything that has weight and takes up space. Is anything that has weight and takes up space. All matter is made of atoms. All matter.

Structure of an Atom.

Atomic Structure Unit 2—Part III. What is an atom? Atom: the smallest unit of matter that retains the identity of the substance First proposed by Democratus.

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

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.

Components of the Atom Nucleus: Nuclear Forces:

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.

Matter & The Atom. Matter The term matter describes all of the physical substances around us Matter is anything that has mass and takes up space The Universe.

STRUCTURE OF THE ATOM.

Atomic Structure Chm Matter MixturesPure Substances.

Warmup: Concept: PS-2.1 Compare the subatomic particles.

Structure of an Atom.

ATOMS Basic building blocks of all matter.

Describing the Structure of ATOMS

 Intro to the Atomic Theory Elements, Atoms, and Subatomic Particles Bill Nye - Atoms.

The Atom and Its Parts Physical Science.  The three subatomic particles are:  Proton – Positive charge  Electron – Negative charge  Neutron – No charge.

Atoms w What are atoms? w What’s in them? w Why are they important? w Can you combine them?

Chapter 2: The Chemistry of Life

Matter & Atoms Unit 2. Matter Matter – anything that has mass and takes up space. Matter is made up of MUCH smaller particles known as atoms. 1)

Introduction to Chemistry. What is “matter?” Matter is anything that has mass and takes up space EVERYTHING around you is matter (including you!)

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

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

The Structure of an Atom Chapter 4.2. Warm-up: KWL Chart - ATOMS What I Know About Atoms What I Would Like to Learn About Atoms What I Have Learned About.

Atoms: Building Blocks of Matter

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.

Atomic Structure. What is an atom? Atom: the smallest unit of matter that retains the identity of the substance Atoms are the “Building Blocks” of all.

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

The 2 locations in the atom are _____________ and __________________. Protons have a _____________ charge and are located in the ________________. Neutrons.

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.

Notes on Isotopes Remember Protons are (+) and Electrons are (-). Neutrons were the last subatomic particles to be discovered because they have no electrical.

The Atom Unit 4 Chemistry. DO NOW 11/16/15  Answer the following questions  What do you know about the atom (ex: what is it made of?)  How big is the.

Intro to Atomic Structure

Atoms and Elements. Subatomic Particles Atom- Smallest particle of an element. Subatomic Particles- Atoms are composed of protons, neutrons, and electrons.

Warm Up Question –Name the three subatomic particles. –List anything you think you might know about them.

CST Review Day 1 “Must we do it? I don’t want to do it!”

Structure of Atoms In the mid-1800s scientists discovered that atoms can be broken into pieces after all. The smaller parts that make up atoms are called.

Atomic Structure Review Which of the following is NOT true about electrons? a) They have a negative charge b) They are the heaviest subatomic particle.

The Structure of Atoms The structure of atoms The parts of an atom Atoms are made of several types of tiny particles. The number of each of these particles.

1 The Atom Atomic Number and Mass Number Isotopes.

Atomic Structure Notes You will need your periodic table or your textbook p. 28.

The Atomic Theory The smallest particle of an element that can enter into chemical change. 2. Building block of all matter. 3. Consists of a central nucleus.

The Modern View of Atomic Structure

Structure of an Atom & The Charge of An Atom

Atomic Structure I. Subatomic Particles C. Johannesson.

ATOMS NOTES Adapted from

Atoms and Molecules.

Atoms Atomic Structure.

Atoms and Molecules.

Matter & The Atom.

What are the masses of the subatomic particles?

ATOMS NOTES Adapted from

Atomic Structure.

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

Parts of an Atom.

Atomic Structure.

Atomic Structure 1.

Presentation transcript:

Parts of an Atom An atom consists of a nucleus surrounded by one or more electrons The nucleus is the center region of the atom where the protons and neutrons are located

Majority of the atom is empty space. If nucleus were the size of a pencil eraser, the closest electron would be 100 yards away! Subatomic Particles – Protons – Neutrons – Electrons Nucleus: Tightly packed with Protons & Neutrons Electrons Orbiting speed of light!!

Atomic Mass What is the mass of an atom? SI Unit for mass is the Gram…. Way toooo big to accurately “mass” an atom Came up w/ new unit, an AMU (atomic mass unit) 1 AMU = mass of 1 Proton mass of subatomic particles – Proton = 1 AMU – Neutron = 1 AMU – Electron =.0005 AMU Atomic Mass = the total # of both Protons & Neutrons in the atom ( we don’t worry about the mass of the electrons since they have almost no mass)

Electrical Atomic Charge Electrical charge = 0 All atoms have a neutral charge ( a zero net electrical charge) Protons have a positive (+) electrical charge Neutrons have a neutral (0) electrical charge Electrons have a negative (-) electrical charge Since the net electrical charge is 0 (neutral), if you have 10 Protons (10 “+” charges) then there must be 10 “-” charges (10 electrons) present to balance out the atom.

Summary : An atom is made up of 3 subatomic particles atom Proton Found in the nucleus mass of 1 amu (+) charge Neutron in the nucleus mass of 1 amu neutral (no charge) Electron outside the nucleus Mass is negligible (-) charge