Isotopes Atoms of the same element with a different number of neutrons

Slides:

Advertisements

Similar presentations

4.3: HOW ATOMS DIFFER ATOMIC NUMBER

Advertisements

Atomic Structure Section The Nucleus Nucleus- contains most of the mass of an atom – Protons & Neutrons contains most of an atom’s mass – Electrons-

Chapter 11B Notes Determining Isotope Masses. Intro What is the mass of an atom with 6 protons and 6 neutrons? 12 What is the mass of an atom with 6 protons.

OF PROTONS, NEUTRONS AND ELECTRONS IN AN ATOM

Atomic Mass & Number Isotopes The Periodic Table.

Atoms: The building blocks of Matter

Bellringer 10/01/12 How many protons, neutrons and electrons are in U-235 and Pu-244?

Determining the NUMBER of Protons Electrons and Neutrons in Atoms, Ions, and Isotopes.

Masses of Atoms Chapter 19-2 Pages

Isotopes and Ions. Fill in the following table: Symbol Atomic Mass Atomic Number # of protons # of neutrons # of electrons Na Na Ne Ne Hg Hg Zn Zn Al.

 Atomic Number- the number of protons in the nucleus of an atom of that element  Ex: Hydrogen atoms have only one proton in the nucleus, so the atomic.

Atomic Mass. Atomic Number (A) Number of protons in the nucleus Atoms of the same element all have the same number of protons In a neutral atom, the total.

Isotopic Abundance SCH 3U. Atomic Mass The mass of an atom (protons, neutrons, electrons) Relative Atomic Mass: An element’s atomic mass relative to the.

Average Atomic Mass. Relative Atomic Masses  Masses of atoms (in grams) are very small, so for convenience we use relative masses.  Carbon-12 is our.

Atomic Number & Atomic Mass

Note: When doing calculations never clear your calculator.

Atomic Mass. Atomic mass Most of the mass of an atom is in the nucleus. Most of the mass of an atom is in the nucleus. The nucleus is where all of the.

Atomic Mass. Each element found on the periodic table of elements is given an atomic mass The atomic mass tells you the average mass of the atoms of an.

Section 6.1 Atoms and Moles 1.Students will be able to describe the concept of average mass. 2.Students will be able to demonstrate how counting can be.

Lesson 24: Isotopes An element can be identified by the # of protons it has # of neutrons can vary Neutrons add to the mass of the atom, but do not change.

Masses of Atoms.

Calculating Atomic Mass

II. Masses of Atoms Mass Number

Average Atomic Mass In nature, most elements are a mixture of different isotopes The mass of a sample of an element is a weighted average of all the isotopes.

Calculating Average Mass

Atomic Structure and Isotopes

Atomic Structure Concepts.

Atomic Structure.

Isotopes and RAM Learning Outcomes:

How to calculate it! Average Atomic Mass.

Atomic Structure Nat

Ch Atomic Structure II. Masses of Atoms (p.30-31) Mass Number

Atomic Structure Walk Around

Distinguishing Between Atoms

Subatomic particles.

Unit 2: Atomic Theory & Structure

Standard Atomic Weights on Periodic Table (red numbers) are found through the terrestrial (Sol III) relative abundances of the masses (in amu) of the isotopes.

Isotopes - isotope: atoms of the same element that have different numbers of neutrons - Carbon, as found in nature, is a mixture of isotopes, including.

T. Trimpe Atomic Math Challenge #1 T. Trimpe

Isotopes QUICK NOTES Carbon-14

Isotope -an atom with a different number of NEUTRONS than protons.

Title: Atomic Properties

How many protons, neutrons, and electrons does Hydrogen-2 have?

Isotopes Atoms with SAME number of PROTONS (atomic number) but DIFFERENT numbers of neutrons (i.e. mass number) 6 protons 6 neutrons 6 protons 7 neutrons.

Average Atomic Mass If there are 2 naturally occurring isotopes of

Standard Atomic Weights on Periodic Table (red numbers) are found through the terrestrial (Sol III) relative abundances of the masses (in amu) of the isotopes.

Atomic Symbols = = mass # atomic # protons + neutrons protons

1. What are these two atoms of carbon called?

Atomic Structure Isotope

How We Know What We Can’t See Looks Like Day 4 Average Atomic Mass

Atomic Masses 16.2.

Periodic table data and Isotopes

Ch. 3 Atoms 3.3 Counting Atoms.

Atomic Structure Protons- positively charged, found in nucleus

T. Trimpe Atomic Math Challenge #1 T. Trimpe

Isotopes & Ions.

Goals To define ions and isotopes

Atomic Math Calculations

Ch. 4 - Atomic Structure II. Masses of Atoms Ch.4 Mass Number Isotopes

III. Masses of Atoms Atomic Mass Mass Number Isotopes

How We Know What We Can’t See Looks Like Day 4 Average Atomic Mass

1. What are these two atoms of carbon called?

Find the average of the following numbers…

A simple model of the atom.

Atomic Math Challenge.

Isotopes and Ions of Atoms

Atomic Particles Particle Charge Mass (kg) Location Electron -1

Presentation transcript:

Isotopes Atoms of the same element with a different number of neutrons The protons and electrons are the same in different isotopes of the same element

Isotopes Every isotope of an element has a different mass # because the # of neutrons varies. The average atomic mass of an element is the average of all the isotopes in their relative amounts.

Example # 1 1. What is the average atomic mass of a sample of Carbon with the following isotopes?

Example #1 P E N 4 atoms of Carbon- 12 1 atom of Carbon - 11 Avg. atomic mass =

Example # 2 2. What is the average atomic mass of a sample of Sodium with the following isotopes?

Example # 2 P E N 2 atoms of Na -22 4 atoms of Na -23 1 atom of Na -24 Avg. atomic mass =

Example # 3 What is the average atomic mass of this sample of Copper?

Example #3 P E N 2 atoms of Cu- 63 2 atoms of Cu- 64 Avg. atomic mass =

Example #4 The isotopes of Boron are B -10 and B-11. Why do you think the average atomic mass is 10.81 instead of 10.50?

Example #5 What would you predict is the most common isotope (mass #) of an element with an average atomic mass of 19.8?