All substances are made from atoms. - PowerPoint Presentation

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Uploaded On 2017-11-16

All substances are made from atoms. - PPT Presentation

There are about 100 different types of atoms An element is a substance which contains only one type of atom Atoms Atoms The Periodic Table The Periodic Table Element Compound Mixture Element Compound Mixture ID: 605796

atomic number atoms mass number atomic mass atoms structure electrons isotopes electron shell neutrons atom element protons carbon nucleus energy numbers quiz

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Presentation Transcript

Slide1

All substances are made from atoms. There are about 100 different types of atomsAn element is a substance which contains only one type of atom

Atoms

AtomsSlide2

The Periodic Table

The Periodic TableSlide3

Element, Compound, Mixture

Element, Compound, MixtureSlide4

Atoms have a small central nucleus containing protons and neutronsElectrons orbit the nucleusProtons, neutrons and electrons have different masses and charges

Structure of an Atom

Structure of an AtomsSlide5

Atomic structure

Atomic StructureSlide6

Atomic structure

Atomic StructureSlide7

The atomic number is the number of protons in the nucleusIn an atom, the number of electrons always equals the number of protonsAtoms do not have an overall electrical charge

Atomic number

Atomic NumberSlide8

Atomic number

Atomic NumberSlide9

The mass number is the total number of protons and neutrons in an atomThe number of neutrons can be calculated by subtracting the atomic number from the mass number

Mass number

Mass NumberSlide10

Mass number

Mass NumberSlide11

Calculations

CalculationsSlide12

Isotopes are atoms of the same element that have different numbers of neutrons (e.g. carbon-12 and carbon-14)Isotopes have the same atomic number but different mass numbers

Isotopes

IsotopesSlide13

Isotopes

IsotopesSlide14

Each electron in an atom is at a particular energy level (or shell)Electrons fill the lowest energy levels first (nearest to the nucleus)The first shell can take a maximum of 2 electrons, the second shell can take 8, and the third shell can take 8

Electrons

ElectronsSlide15

Electron Shells

Electron shellsSlide16

Electron arrangements

Electron arrangementsSlide17

Wordsearch

WordsearchSlide18

Quiz