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CHMI-1006EL Lecture Notes - Lecture 2: Rutherford Model, Elementary Particle, Sulfur

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4 Nov 2016

School

Department

Chemistry & Biochemistry / Chimie et biochimie

Course

Professor

Caron Franﾍois

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Document Summary

90) are found in nature, the others have been prepared artificially. Combine sodium with chlorine to make sodium chlorine. There are literally millions of known compounds or substances. Compounds or substances are noted by the relative amounts of elements. Other examples: water, h2o; carbon dioxide, co2; methanol, ch4o, etc. The ele(cid:272)tro(cid:374)s (cid:862)gra(cid:448)itate(cid:862) arou(cid:374)d the (cid:374)u(cid:272)leus; they (cid:271)elo(cid:374)g to a regio(cid:374). They gravitate so fast that they effectively occupy the whole space. The protons and neutrons remain in the nucleus and are unchanged with chemical reactions. The protons retain and keep the identity of the elements. The amu is defined relative to the mass of 12c: it is equal to 1/12 of the mass of a. Carbon atom that has 6 p and 6 n; 12c is assigned a mass of exactly 12; 1 amu has a mass equal to 1. 6605 10-24 g. Mass number a = n + z. For a neutral atom, number of e- = z.

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Related Questions

Predict the charge that an aluminum ion would have.

Terms in this set (26)

example of the law of multiple proportions

Two different compounds formed from carbon and oxygen have the following mass ratios:

1.33 g O: 1 g C and 2.66 g O: 1 g C.

2) Which of the following statements is FALSE according to Dalton's Atomic Theory?

A) Atoms combine in simple whole number ratios to form compounds.

B) All atoms of chlorine have identical properties that distinguish them from other elements.

C) One carbon atom will combine with one oxygen atom to form a molecule of carbon monoxide.

D) Atoms of sodium do not change into another element during chemical reaction with chlorine.

E) An atom of nitrogen can be broken down into smaller particles that will still have the unique properties of nitrogen.

The mass number is equal to

the sum of the number of protons and neutrons

a subatomic particle is

A neutral atom contains the same number of protons and electrons

true statement about isotopes

Some elements have 3 or more naturally occurring isotopes

Identify a cation

An atom that has lost an electron

What species is represented by the following information?

p+ = 12 n° = 14 e- = 10

What species is represented by the following information?

p+ = 47 n° = 62 e- = 46

What species is represented by the following information?

p+ = 17 n° = 18 e- = 18

Predict the charge that an aluminum ion would have

Predict the charge that a calcium ion would have

Predict the charge that an ion formed from sulfur would have

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