'Calculating atomic mass' presentation slideshows

2.1 Elements and Symbols

2.1 Elements and Symbols. Elements. Elements are pure substances that cannot be separated into simpler substances by ordinary laboratory processes. Elements are the building blocks of matter. There are 113 elements known today. gold carbon aluminum.

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Atomic Theory & the Periodic Table

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Unit 1 Matter and Bonding

Unit 1 Matter and Bonding. CHEMISTRY. Why do I have to study chemistry?. Atomic Theory. All elements are composed of atoms Each element contains similar atoms Atoms of one element are different from ones from another Two or more different atoms bond together to form a compound.

445 views • 36 slides

History of Chemistry and Atomic Structure

History of Chemistry and Atomic Structure. Unit 3. Early developments. Chemistry has been around ever since people started working with dyes (more than 20,000 years ago) and hardening clay for ceramics (8,000 years ago).

660 views • 34 slides

Atomic Structure

Atomic Structure. Chapter 4. Defining the Atom. Atom ? smallest particle of an element that retains its identity in a chemical reaction Early models of the atom were proposed by philosophers and scientists that could not observe individual atoms Democritus Dalton.

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Atomic Theory & the Periodic Table

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Chemistry Atomic Theory

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The Mole

The Mole. Remembering Terms. Atomic number- # of _________ Mass Number- # of particles in the ________ (_______ + ________) __________- average mass (in atomic mass units, amu) of all naturally occurring isotopes according to their abundance. Given: one atom 56 Fe

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Warm Up

Warm Up. O O 2- Zn 2+ 8 p + 8 p + 30 p + 8 n 8 n 35 n 8 e - 10 e - 28 e -. Same Element Different Atom-Isotopes. All atoms of a particular element are not exactly alike.

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The Atom

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