THE STRUCTURE OF ATOMS Pg. 43. Daily science- pg. 40  Who discovered the neutron? Electron? Nucleus?  What did Democritus theorize?  Name two differences.

Slides:

Advertisements

Similar presentations

Reviewing Subatomic Particles

Advertisements

Bellringer Write down 5 things you know about atoms.

Atomic Structure.

Atomic Mass & Number Isotopes The Periodic Table.

Inside the Atom.

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.

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.

 The atoms of all elements are made up of a central nucleus with orbiting electrons. ◦ A nucleus is made up of positively charged PROTONS and neutral.

Atomic Structure and the Periodic Table

Atomic Structure I. Subatomic Particles.

Reading the Periodic Table. The top number is the atomic number or the number of ______________________ Cl is an abbreviation for ______________________.

Subatomic particles Electron Proton Neutron NameSymbolCharge Relative mass Actual mass (g) e-e- p+p+ n0n / x x

STRUCTURE OF THE ATOM.

Atom Notes Notebook /22/02 What is in an atom? The Three Primary Subatomic Particles... n Protons n Neutrons n Electrons.

Atom Practical Review. Name the subatomic particles? Protons, Neutron, and Electrons.

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

Unit 2 Atomic Theory. An atom is… The smallest particle into which an element can be divided. “Building block of matter”

ATOMS REVIEW 2014 December Benchmark. AN ATOM IS CONSIDERED TO BE NEUTRAL IF IT HAS EQUAL PARTS OF ______________ AND _________________. An atom is considered.

+ Chapter 4 Review. + Vocabulary Review! Matter Anything that has mass and takes up space.

The Structure of the Atom. Subatomic particles Subatomic particles are particles that are smaller than an atom Rutherford had predicted three subatomic.

The Atom Pg. 29. Early Theories There was no experimentation Democritus- atoms are solid, homogeneous, indestructible, and indivisible Aristotle- believed.

Isotopes and Ions.

Proton, Neutron, Electron Counting Protons (p + ) are positively charged and located in the nucleus The number of protons in each atom can be found on.

Daily science- pg. 30  Create a table like the following on page 30 in your notebook. Label this page History of the Atom. Leave a few lines for each.

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!

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

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.

Review of Atomic Theory History. Structure of an Atom A carbon atom consists of protons and neutrons in a nucleus that is surrounded by electrons. - Introduction.

Atomic Structure Unit 3.

Atoms, Ions, & Isotopes pg & LO: I can explain the number of protons, electrons, neutrons & overall charge for any element or isotope.

PROTON Proton: the positively charged particle found in the nucleus of an atom.

The Atom.  An atom is the smallest particle of matter that still has the same properties of that element. What is an atom? Atoms = Building Blocks Na.

Chapter 3 review With chalkboards. What is this called? z X A.

Subatomic Particles Notes 9/14/12

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

6.2 – Atomic Theory Science 10 Mr. Francis. Atoms are made of component particles called subatomic particles: protons, neutrons, and electrons. Atoms.

Journal #20 1. Who discovered the electron? 2. What did Rutherford discover?

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

What part of an atom is the arrow pointing to? A. proton B. electron C. neutron D. shell E. nucleus.

Atomic Structure Chemistry: Unit D. What is an atom? Atom: the smallest unit of matter that retains (keeps) the identity of the substance First proposed.

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.

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.

Science 8 th grade. Atomic structure  Atoms are composed of subatomic particles protons (+), neutrons (+-), and electrons (-).  in the center of the.

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

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

The Structure of an Atom

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

Organizing elements Periodic table. Mendeleev developed a periodic table that arranged elements in order of increasing atomic mass. He studied the melting.

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

Isotopes Chapter 4, Section 3 Pg Review of Atoms Atoms are made of protons, neutrons, and electrons. – Protons are +, electrons are –, and.

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.

{ Atom and Isotope Review Physical Science. An atom has 6 protons, 8 neutrons, and 6 electrons. What is the atomic mass?

Atomic Structure. Subatomic Particles ParticleSymbolChargeRelative mass location proton.

Atomic Structure Concepts.

ELEMENTS, IONS AND ISOTOPES

Learning objective 2: I can understand the patterns found in the number of protons, neutrons, and electrons in an atom.

Atomic Structure and the Periodic Table

The Chemistry of Life The Nature of Matter.

Isotopes - isotope: atoms of the same element that have different numbers of neutrons - Carbon, as found in nature, is a mixture of isotopes, including.

The Structure of an Atom

Chemistry Unit: Chapter 3

The Structure of an Atom

ATOMS AND ATOMIC STRUCTURE

Presentation transcript:

THE STRUCTURE OF ATOMS Pg. 43

Daily science- pg. 40  Who discovered the neutron? Electron? Nucleus?  What did Democritus theorize?  Name two differences between the old atomic theory and the new atomic theory?

What makes up an atom?  Atoms are made of subatomic particles.  The three subatomic particles are the proton, electron, and neutron.

Structure of an atom  The nucleus is located at the center of the atom.  It contains positively charged particles, called protons, and neutral particles, called neutrons.  Most of the mass is located here.

Structure of an atom  Electrons, or negatively charged particles, exist outside of the nucleus in the electron cloud.

Subatomic Particles chart ParticleChargeMassLocation Proton x In the nucleus Neutron x In the nucleus Electron9.11 X Outside the nucleus

Atomic Number  The periodic table can be used to find the number of protons, electrons, and neutrons.  The atomic number of an element (labeled Z) tells you how many protons there are.  On the periodic table, the elements are listed as neutral elements so the number of electrons=the number of protons.

Atomic number Z

Mass Number  The mass number (labeled A) is the number of neutrons + protons.  It is located under the element symbol.  You can find the number of neutron by subtracting the Atomic number (Z) from the Mass number (A)  A-Z = # of neutrons

Mass Number

Writing Atomic mass and number  There is a way to represent atomic mass and number  Steps:  1-start with the element symbol  2- place the mass number on the top left side of the symbol  3-place the atomic number on the bottom left side of the symbol

Symbol Al 27 13

Isotopes  An isotope is an element that has the same number of protons but a different number of neutrons.  Ex. Carbon has 2 common isotopes:  Carbon-12 Carbon-14  The numbers represent the mass number

Determining the number of neutons  Ex. Carbon 12 and Carbon 14