'Relative atomic mass' diaporamas de présentation

Atomic Theory

Atomic Theory . Unit 7. The Atom. An atom is the smallest part of any element that can take part in a chemical reaction. An atom is the smallest particle of an element which still retains the properties of that element. Atoms are extremely small. Structure of the Atom.

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Modern Chemistry Chapter 3 Atoms: the building block of matter

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Topic 2 Atomic Structure

Topic 2 Atomic Structure. A Brief History. 1807: John Dalton proposed atomic theory. All matter was made up of small number of different kinds of atoms. Atoms are indivisible and indestructible, but could combine in whole numbers to form compounds. 1897: J. J. Thompson

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All you need to know about Additional Science

All you need to know about Additional Science. C2 CHEMISTRY. Chapters in this unit. 1. Structures and bonding 2. Structures and properties 3. How much? 4. Rates of reaction 5. Energy and reactions 6. Electrolysis 7. Acids, alkalis and salts. 1.1 Atomic structure. 1.1 Atomic structure.

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How is the mass of atoms measured?

One grain of sand contains millions of atoms, so atoms must be really small. How is the mass of an atom measured?. Atoms are so small that their masses are not measured directly. Instead, all atoms are compared with the mass of carbon-12.

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All of the elements on the periodic table make up everything in our world!

All of the elements on the periodic table make up everything in our world! The periodic table consisting of most of the known elements was developed by a Russian man called Dimitri Mendelev around 1860. He managed to put all the elements in order of weight ! without sophisticated scientific

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Atoms, Ions and the Periodic Table

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Chapter #2

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Masses of Atoms (Part 1)

Masses of Atoms (Part 1). Relative Atomic Mass ( A r ) tells us the mass of an atom compared to Carbon-12. . The A r takes into account all the isotopes of the element, so that is why Chlorine is Cl35.5.

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Atomic Structure

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Access to Science: Chemistry

Have a go at the element word search, use your periodic tables to help you!. Access to Science: Chemistry. Week 2 electronic configuration, basic and advanced. Are you ready to learn? Lab notebook out and a pen No food out, drinks away Phones on silent and in your bag

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The Mole and Chemical Composition

The Mole and Chemical Composition. Relative Atomic Mass and Chemical Formulas. Average Atomic Mass. Why are the atomic masses of most elements on the periodic table not exact whole numbers?. These are relative atomic masses

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Atoms

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Chemistry

Chemistry. The mole. The mole . Very important concept Used in almost all calculation in chemistry What is a mole? A mole is the amount of substance that contains 6x10 23 elementary units (ions, molecules and atoms). 1 mole of sodium chloride ions would contain 6x10 23 ions

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CHAPTER 3: CHEMICAL FORMULAE & EQUATIONS

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The Mole & Avogadro

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Halogens & Isotopes

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3. Isotopes and Mass calculations

3. Isotopes and Mass calculations. Objectives: Defining and calculating Ar and Mr for ionic and molecular substances. Relative atomic mass Calculations. What is relative atomic mass calculated from? Why is it rarely a whole number? Find the Ar of the following: Caesium Cadmium Copper

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Warm Up 23Oct13 Write down questions along with answers.

Warm Up 23Oct13 Write down questions along with answers. What is Relative Atomic Mass ? Describe the function of the middle 3 processes in a mass spectrometer. Write the long-hand electron configuration of Iodine (I). Write the short-hand electron configuration for Silver (Ag).

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