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

Slides:

Advertisements

Similar presentations

I love science, Ms. Solari!

Advertisements

Atomic Structure Nucleus – contains protons and neutrons

OF PROTONS, NEUTRONS AND ELECTRONS IN AN ATOM

Atomic Mass & Number Isotopes The Periodic Table.

Atomic Structure. Basic Parts of the atom- Subatomic Particles Proton Positive charge Found in the nucleus Dictate the identity of the atom Neutron No.

Atomic Structure. Basic Parts of the atom- Subatomic Particles Proton Positive charge Found in the nucleus Dictate the identity of the atom Neutron No.

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:

Examples: Average Atomic Mass. Example Chlorine exists as a mixture of % chlorine-35 and % chlorine-37. Determine the average atomic mass.

Atomic Structure and the Periodic Table

Chapter 4 Atomic Structure

Chapter 11 The Atom.

Chapter 4.  Smallest part of an element that retains the properties of that element  all elements are made of indivisible atoms.

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

MATTER UNIT STRUCTURE OF AN ATOM.  Atom : the smallest unit of matter that retains the identity of the substance.

Atomic Structure Two regions of every atom: Nucleus -is made of protons and neutrons -is small and dense Electron cloud -is a region where you might.

STRUCTURE OF THE ATOM.

ATOMS Basic building blocks of all matter.

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

Unit 2 Review - Section 1 Atomic Structure and Mass.

Atomic Structure nucleusproton (+) Neutron (o) Electron (-)

 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.

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 is the smallest unit of matter? An atom What is an atom made of? Subatomic particles protons (p + ) – positive charge neutrons (n) – no charge.

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.

Atoms: Building Blocks of Matter

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

Atoms & Their Structure Chapter 2 Section 1 Part 3.

How Atoms Differ. a. Properties of Subatomic Particles ParticleSymbolLocationRelative Charge Relative mass Actual mass (g) Electron Proton Neutron.

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.

The Modern Model The modern atom is composed of two regions: 1. Electron cloud- Most of the volume of an atom and is the region where the electron can.

Atoms, Isotopes, and Bohr!

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

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

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.

Protons, Neutrons, and Electrons

Atomic Structure. Subatomic Particles In the nucleus: Protons Mass  1 amu Charge = +1 Neutrons Mass  1 amu Charge = 0 In the electron cloud: Electrons.

The atom. Atoms Atoms are the thought of as the smallest part of an element They are formed from three different subatomic particles These are call.

Atomic Structure.

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.

Parts of the Atom … from Discovery to Reality. NUCLEUS PROTONS ✚ Positively charged particles Mass = 1 amu NEUTRONS No charge or neutral Mass = 1 amu.

Class Notes: Atomic Models. Democritus= 400 B.C. – said the world was made of two things: empty space and tiny particles called “atoms” --said atoms were.

Subatomic Particles Atoms are composed of three particles Protons Neutrons Electrons Particles can be distinguished by their charge, mass, and location.

ATOMIC THEORY REVIEW. ATOMS !!! What are the 3 subatomic particles? Protons, neutrons, & electrons!!! WHAT IS ALL MATTER MADE OF?

 Smallest part of an element with all the properties of that element.  2 parts.

Atomic Structure Notes Subatomic Particles Subatomic Particles Atomic Number, Atomic Mass & Mass Number Atomic Number, Atomic Mass & Mass Number Symbols.

1 The Atom Atomic Number and Mass Number Isotopes.

Atoms, Elements, and the Periodic Table Ch. 17 & 19 Ch. 17 Section 1 Structure of the Atom.

ATOMIC STRUCTURE An atom is the smallest particle of matter that retains the properties of the element. An atom is composed of ______ subatomic particles.

Aim: What is the internal structure of an atom?

Atomic Structure.

STRUCTURE OF THE ATOM.

Atoms, Isotopes, and Bohr!

ATOMS NOTES Adapted from

Parts of an Atom UNIT 1 NOTES.

ATOMS NOTES Adapted from

Unit 1 Vocabulary Atom – smallest particle of an element that maintains the properties of that element Atomic mass – average mass of one atom of an element.

Bell Ringer List all elements in Column 18 and their symbol.

Intro to Atomic Structure

Atomic Structure Test Review.

Aim: What is the internal structure of an atom?

Atomic Structure Protons- positively charged, found in nucleus

Atomic Structure Nucleons Atomic Number

Atomic Structure Notes

Counting Subatomic Particles

Presentation transcript:

Atomic Theory Modern Model

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

Two parts nucleus (page 316) – tiny, extremely dense, positively charged, center of the atom electron cloud (page 317) – regions where electrons are likely to be found

The atom is mostly empty space. See Figure 7 on page 316.

Subatomic particles ParticleSymbolLocationCharge protonp+p+ neutronnono electrone-e-

ParticleSymbolLocationCharge protonp+p+ nucleus neutronnono nucleus electrone-e- electron cloud

ParticleSymbolLocationCharge protonp+p+ nucleus1+ neutronnono nucleusnone (0) electrone-e- electron cloud 1-

atomic number Number of protons = number of electrons Identifies the element. Locate on the periodic table. (Page )

Study Buddies 1)How many protons does carbon have? 2)How many electrons does carbon have? 3)How many protons does chlorine have? 4) How many electrons does aluminum have? 5)What element has 20 protons? 6)What element has 16 electrons?

Answers 1)How many protons does carbon have? (6) 2)How many electrons does carbon have? (6) 3)How many protons does chlorine have? (17) 4)How many electrons does aluminum have? (13) 5)What element has 20 protons? (calcium) 6)What element has 16 electrons? (sulfur)

Atomic Theory Model These energy levels or shells follow a very predictable pattern. The closest shell to the nucleus can have up to 2 electrons. The second shell from the nucleus can have up to 8 electrons. The third shell can have up to 18 electrons. The fourth shell can have up to 32 electrons. Bohr’s Model Copper (Cu) atom

Maximum electrons 1 st energy level = 2 2 nd energy level = 8 3 rd energy level = 18 4 th energy level = 32

Periodic Table See the number of electrons for each energy level.

Size of atom atomic mass unit (amu,  ) = unit for mass on the atomic scale

Mass of subatomic particles proton ~ 1 amu neutron ~ 1 amu electron is tiny (Who cares?)

mass number Number of protons + number of neutrons

atomic weight Aka: average atomic mass The weighted average of the masses of the naturally occurring isotopes of an element The other number on the periodic table (unit = amu)

Atomic weight is close to the mass number for the most common kind of atom of that element.

Calculate number of neutrons Example: bromine (#35) Mass number = 80 Atomic number = 35 = protons Neutrons = = 45

Calculate number of neutrons Example: strontium (#38) Mass number = 88 Atomic number = 38 = protons Neutrons = = 50

Assignment Example Bromine symbol = Br Mass number = 80 Atomic number = 35 Number of protons = 35 Number of neutrons = 80 – 35 = 45

Assignment Example Bromine continued Number of energy levels = 4 Skip period and group columns today.