Chapter 3 “Atomic Structure”. Definition of an Atom Dictionary definition The smallest component of an element having the chemical properties of the element,

Slides:

Advertisements

Similar presentations

Atomic Structure Nucleus – contains protons and neutrons

Advertisements

Unit 3: Atomic Structure Atomic Number, Mass Number, and Isotopes.

Atomic Mass & Number Isotopes The Periodic Table.

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

TOPIC 1: Isotopes. Potassium % Potassium % Potassium % PROTONS ELECTRONS NEUTRONS There are 3 isotopes of K atoms.

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.

Atomic Structure I. Subatomic Particles.

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

Chapter 2~The Chemistry of Life

 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.

The three SUBATOMIC PARTICLES are

What do atoms look like?. What do we know about atoms? *All elements are composed of atoms *The atoms of the same element are the same (and different.

Atomic Structure. ATOMS All matter in the universe is composed of tiny particles These particles are called Atoms Atom Matter Tiny Particles.

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

Masses of Atoms Chapter 19-2 Pages

The Basics of Atomic Structure. Terms you should know… Atom: smallest unit of an element that maintains the identity of that element. Chemical Reaction:

Atomic Mass. Atomic Number (A) Number of protons in the nucleus Atoms of the same element all have the same number of protons In a neutral atom, the total.

1. Proton 2. Neutron 3. Electron 1. Protons 2. Neutrons 3. Electrons.

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)

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!

– a unit of matter; the smallest unit of a chemical element.

Do Now: If a student’s grade is weighted per the table below, what would their grade be? WeightAverage Tests50%80 Classwork30%95 Homework20%85.

Chapter 1 Activity 9 Part A

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

The Amazing Atom. Atoms All matter is made of very tiny particles All matter is made of very tiny particles These atoms have the same properties as larger.

Chapter 4 Atomic Structure. Atom Atom – smallest part of an element that retains the properties of that element. Atomic Theory – proposed by John Dalton.

Atomic Number & Atomic Mass

I. Subatomic Particles (p ). ParticleSymbolLocationChargeRelative Mass (amu) Actual Mass (g) electron proton neutron e-e- p+p+ n0n0 Electron.

The Structure of the Atom

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

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

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

Reading the Periodic Table: Element Squares. Atomic Structure Nucleus Electron Cloud.

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.

Atomic Structure Worksheet

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.

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 What defines the property of a substance.

Chapter 8 Earth Chemistry Part – Atomic Number  An atom of a specific element is different from other elements by the number of protons it has.

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.

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

 Atom – the smallest particle of an element that retains the properties of that element.  When we say “small,” we mean “SMALL!”  A typical copper penny.

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

The Structure of Atoms Section 4.2. You want to be able to … describe the general structure of the atom, and explain how the properties of the first 20.

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

Chapter 4 “Atomic Structure”. Definition of an Atom Dictionary definition The smallest component of an element having the chemical properties of the element,

SECONDARY SCIENCE: CHEMISTRY

Atomic Structure I. Subatomic Particles C. Johannesson.

The Atom Chapter 6.

Structure of an atom and the Atomic timeline

Important Terms ATOM - Smallest unit of an element that keeps its chemical properties ELEMENT – Unique substance with the same number of protons in every.

Bell work – what is an atom?

Presentation Properties of Atoms

INTRODUCTION TO ATOMS CHAPTER 3 section 1.

The Atom Chapter 25.

Foldables: Atoms Terms.

Atomic Structure Notes

Atomic Structure.

Parts of an Atom.

Structure of an Atom.

Example Example 1: The atom of an element has a mass number of 214 and an atomic number of 82. a) How many protons and neutrons does it have? The number.

Presentation transcript:

Chapter 3 “Atomic Structure”

Definition of an Atom Dictionary definition The smallest component of an element having the chemical properties of the element, consisting of a nucleus containing combinations of neutrons and protons and one or more electrons bound to the nucleus by electrical attraction; the number of protons determines the identity of the element. Origin of word atom: Greek word “atomos” which means uncuttable, or indivisible, something that cannot be divided further.

Parts of the Atom

PartSymbolCharge Mass Number Mass in amu Proton p+p+ + 11~ 1 amu Neutron nono 01~ 1 amu Electron e-e- - 10~ 0 amu An electron weighs 1/1836 of a proton

What Does an Atom Look Like? - Let’s look at the Helium atom

Helium Atom

How small is an atom? 0.22 nanometers meters

What Makes Atoms Different From Each Other? The number of PROTONS!!! The atomic number (Z) equals the number of proton’s in an element’s atom. Since elements on the periodic table are neutral (no charge), we can assume the # of electrons = # of protons. The mass number equals the total number of protons and neutrons in the nucleus of an atom.

How Many Neutrons? If we know the mass number then we can figure out how many neutrons are present by the following equation: mass # - atomic # = # of neutrons Q: How do we figure out what the mass number is??? A: Round the atomic mass on the periodic table to the nearest whole number The mass number equals the total number of protons and neutrons in the nucleus of an atom.

Nuclides The particles that make up the nucleus of an atom are called nuclides. The nuclide shows the mass number along with the atomic number (# of protons) of an atom. # protons # neutrons # electrons # protons # neutrons # electrons # protons # neutrons # electrons

What the Quark? Turns out protons and neutrons are made from smaller parts!! Uggh! Quarks

Same Element Different Atom All atoms of a particular element are not exactly alike. Some elements have atoms with different masses (isotopes)

Cool Down What are two things you learned today? What do you still not understand? Homework due Wednesday Worksheets 4.1 and 4.2