Mrs. Butsch 8th Grade Science

Slides:

Advertisements

Similar presentations

CHEMISTRY 112 Atomic Structure. Early Models of the Atom An atom is the smallest particle of matter that retains its identity in a chemical reaction Democritus.

Advertisements

Lesson 2.1 – Atomic Structure History of the Atom.

Properties of Matter. Element A pure substance that cannot be broken down into simpler substances by ordinary chemical means. Sulfur.

8 TH GRADE VOCABULARY M.ESPINDOLA-MORENO. ATOM The smallest particle of an element made of electrons, protons, and neutrons.

Matter and Atomic Structure

Chapter 3 Atoms and Elements

Elements and Compounds Atomic Theory

Atoms and their Structure

All Need to Know About Atoms

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.

Chapter 4 review.

Dalton’s Atomic Theory

3.2 Introduction to the Atom The Nucleus

Early Models of the Atom

Introducing Atoms.

Origin of the idea of atom…

Unit 1 – Atomic Structure

Atomic Structure – Chapter 4

Atoms! What is matter made of?.

Atoms – The Building Blocks of EVERYTHING

Atomic Structure.

Atoms: Development of the Atomic Theory

Early models of the atom

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

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

Matter and Atoms 4-1.

Structure of an Atom.

Origin of the idea of atom…

Matter Unit Structure of an Atom.

Part I: Atoms, elements and compounds

Atomic Structure Matter: anything that has a mass

Origin of the idea of atom…

Atoms & Molecules.

Presentation Properties of Atoms

Atom Model History - Democritus a fifth century B.C. Greek philosopher proposed that all matter was composed of indivisible particles called atoms (Greek.

Structure of an Atom.

Goal – 3 Atoms Students will be able to identify parts of the atom and how the parts of the atom play a role in the periodic table.

Chapter 5 The ATOM Democritus (400 BC) reasoned that all things were made up of indivisible particles: ATOMS Dalton ( ) performed experiments Atomic.

Discovering the Atom.

Science, Matter, Energy, and Systems

Introduction to Chemistry

Ch. 3 – Atoms: The Building Blocks of Matter

ELEMENTS & ATOMS.

Science Vocabulary 3 Week 8.

Chapter 4 The Structure of an Atom.

Topic: Structure of an Atom

Introduction to Chemistry

Chemistry Chemical Interactions Ch. 1

The amount of matter in an object.

Atomic Structure An atom is the smallest particle of an element that retains its identity in a chemical reaction. Although early philosophers and scientists.

History of the atom UNIT 2.

chemistry Unit Chemistry= science of matter (atoms)

Section 4.1 Atomic Theory and Structure

Atomic Structure.

Structure of an Atom.

Atomic Structure.

What Are Elements?.

Atoms: Development of the Atomic Theory

Structure of an Atom.

The Basic Unit of Matter

Unit 1: Structure of Atoms and Elements Mrs. Collins' Physical Science

Has mass and takes up space

Topic: Structure of an Atom

Presentation transcript:

Mrs. Butsch 8th Grade Science Atoms and Elements Mrs. Butsch 8th Grade Science

ATOMS Atoms: The building blocks of all matter made up of protons, neutrons, and electrons.

Atoms More than 2000 years ago the Greek philosopher Democritus (460-371 B.C.) formulated the atomic hypothesis: All matter consists of smallest (indivisible) entities (atoms), separated by empty space. Combinations of the different kinds of atoms form all the things in nature.

Dalton's Atomic Theory John Dalton's theory was based on the premise that the atoms of different elements could be distinguished by differences in their weights. He stated his theory in a lecture to the Royal Institution in 1803. The theory proposed a number of basic ideas: All matter is composed of atoms Atoms cannot be made or destroyed All atoms of the same element are identical Different elements have different types of atoms Chemical reactions occur when atoms are rearranged Compounds are formed from atoms of the constituent elements.

Atoms Protons: Particles that have a positive electric charge. Neutrons: Particles that have no electric charge. Both Protons and Neutrons make up the Nucleus of an atom.

Atoms Electrons: Particles that have negative charge in an atom. Electrons exist outside the nucleus. Electrons orbit the nucleus of an atom. The closer an electron is to the nucleus, the less energy it has. The farther away an electron is to the nucleus, the more energy it has.

Atoms Protons Neutrons Electrons

Elements Elements: Substances that are made of only one type of atom and cannot be broken down into simpler substances by normal chemical or physical changes.

Note the locations of the metals, halogens and noble gases.

C Elements Atomic Number: The number of protons in an atom. 6 12.011 + 12.011 Carbon

Elements Atomic Mass: The number of protons plus the number of neutrons in an atom 6 C Atomic Mass 12.011 Protons + Neutrons + n Carbon

C Element Information 6 12.011 Atomic Number Symbol Atomic Mass Number of Protons - + C - Symbol n Starts w/ a Capital + n n + - + - + + n n 12.011 + Atomic Mass n Protons + Neutrons + n - Name of Element Carbon - How do you determine the number of Neutrons ? n Subtract the Atomic Number from the Atomic Mass 12 – 6 = 6 - = + n + n How do you determine the number of Electrons ? - In a stable atom, the number of protons equals the number of electrons 6 = 6 = + -