Chemistry – Nov 3, 2017 P3 Challenge- (must show work) 2nd period --- notes on this first (get ready) Determine the atomic mass of Boron given the following.

Slides:

Advertisements

Similar presentations

Isotopic Notation Chemistry 11. Definition of an Isotope Isotopes are atoms with the same number of protons but different number of neutrons Isotopes.

Advertisements

Isotopes and Mass Number. Atomic Number The number of protons in each atom identifies it as an atom of a particular element Each atom has a unique number.

Chapter 4 Atoms and Elements

Atoms – a closer look at elements

Homework from page 104.

Chapter 3 Atoms and Elements 3.5 Atomic Number and Mass Number 1.

Average Atomic Mass The weighted average of the masses of all the naturally occurring isotopes of an element.

More about isotopes Atomic mass vs average atomic mass or atomic weight.

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.

Chapter 4 Section 4.  There are about 118 known types of atoms.  Each element has it’s own type of atom.  All atoms of an element have to have one.

 The weighted average of its naturally occurring isotopes. Chemical Name Atomic # Chemical Symbol Atomic Mass (Average Atomic Mass)

Determining Average Atomic Mass

What is average atomic mass?

Distinguishing Among Atoms

Unit 3: Atomic Structure. A. Subatomic Particles Most of the atom’s mass (Mass Number) NUCLEUS ELECTRON CLOUD PROTONS NEUTRONS ELECTRONS POSITIVE CHARGE.

Protons, Neutrons, Electrons/Isotopes/Average Atomic Mass.

Isotopic Abundance Pages Thinking question Why are there decimal places for atomic masses on the periodic table if protons and neutrons have amu.

Ch. 3-3a Distinguishing and Counting Atoms. POINT > Define Atomic Number POINT > Define Mass Number POINT > Describe and identify isotopes POINT > Determine.

Isotopes are atoms of the same element that have a different number of neutrons For example, Hydrogen has 3 isotopes: Protium (0 neutrons) Deuterium (1.

Unit 2: Symbols Say WHAT?.

Chemistry – Oct 24, 2016 P3 Challenge- Objective –

Atoms, Ions and Isotopes

Aim: How to Calculate the Average Atomic Mass?

Chemistry – Oct 31, 2016 P3 Challenge- Objective –

SNC1D Isotopes.

Atoms, Ions and Isotopes

Progression of Atomic Models

Atoms, Ions and Isotopes

How Atoms Differ.

Calculating Atomic Mass

Ch. 3-3a Distinguishing and Counting Atoms

Counting Atoms.

II. Masses of Atoms Mass Number

Calculating Average Atomic Mass

Warm Up Monday 1/25/16 1. What are atoms?

5.1 – Isotopes and average atomic mass

Day 5 Chapter 4 Section 2 and 3.

Chemistry – Nov 1, 2017 P3 Challenge- Objective –

Chemistry – Oct 31, 2017 P3 Challenge- Objective –

Chemistry – Nov 2, 2017 P3 Challenge- Objective –

Subatomic Particles Masses of Atoms Mass Number Isotopes Ions

Atomic Structure.

Day 5 Chapter 4 Section 2 and 3.

Chemistry – Nov 29, 2017 Get out #21-31 for Hmk check P3 Challenge-

Chemistry – Nov 28, 2017 Get out #21-31 for Hmk check P3 Challenge-

ISOTOPIC NOTATION isotopes are atoms with the same number of protons but different number of neutrons A Z X A = mass number (the total number of protons.

Distinguishing Between Atoms

Unit 2: Atomic Theory & Structure

Atomic number, atomic symbol, mass number, isotopes

Atomic Structure.

Do First Actions: Get the 4 sheets: Atomic Structure Interactive, Calculating Protons, Neutrons, and Electrons Sheet, Bohr Model worksheet and It’s Natural.

Elements, Isotopes and More

Chemistry – Nov 9, 2018 Get out the atomic history worksheet

P3 Challenge- Given 11B, determine the number of protons, electrons and neutrons in a neutral atom. Then state the atomic number and the mass number for.

Chemistry – Nov 6, 2017 P3 Challenge- Objective –

Protons, Neutrons, Electrons/Isotopes/Average Atomic Mass

Chemistry – Nov 30, 2017 Objective – Compare Ca and Ba.

Chemistry – Nov 8, 2017 Turn in your Beanium Activity

Atoms – a closer look at elements

Chemistry – Nov 16, 2018 Do Now – Get a Beanium sample and a Beanium Lab Handout. Start sorting beans into white chocolate, milk chocolate and dark chocolate.

Chemistry – Nov 2, 2018 P3 Challenge- Objective –

Structure of an Atom.

ATOM COMPOSITION The atom is mostly empty space

Chemistry – Apr 9, 2018 P3 Challenge –

Isotopes & Ions.

Unit 1: Safety & Atomic Concepts

Chemistry – Apr 5, 2018 P3 Challenge –

Chemistry – Dec 1, 2017 Objective – Compare Ca and Ba.

Chemistry Chapter 3 Section 3

Presentation transcript:

Chemistry – Nov 3, 2017 P3 Challenge- (must show work) 2nd period --- notes on this first (get ready) Determine the atomic mass of Boron given the following information Boron 10 Mass: 10.012937 % Abundance: 19.9 Boron 11 Mass: 11.009305 % Abundance: 80.1 Recall Atomic mass = (Mass)(Abund) + (Mass)(Abund) + etc… Objective – Beanium Lab Activity Get out Atoms, Ions and Mass Worksheet for Hmk check

Chemistry – Nov 3, 2017 Agenda – Homework Review Atomic Mass (if needed) Beanium Lab Activity Three isotope names of beans are like chocolates: White, Milk, and Dark Assignment: - Beanium Lab Activity questions

Atomic Mass Given the symbol m Average mass of the atom in amu (decimal value) Weighted average Each isotope has its own atomic mass For any sample of an element, the particular isotopes present will reflect to natural abundance of each type of isotope found on earth. http://www.chem.ualberta.ca/~massspec/atomic_mass_abund.pdf Ex: Ne-20 90.48% Ne-21 0.27% Ne-22 9.25% Each isotope has its own mass: 19.992440, 20.993847, 21.991386

Average Atomic Mass Atomic Mass on periodic table is a weighted average. To calculate atomic mass Let Mn= the mass of isotope n (amu) Let abn= the relative abundance of isotope n (percent as a decimal)

Homework Review Element Symbol Z A #p #n #e charge Oxygen 16O2- 8 16 10 2- Hydrogen 1H 1 3H+ 3 2 + Carbon 14C 6 14 12C 12 Zinc 65Zn 30 65 35 Potassium 39K+ 19 39 20 18

Homework Review Element Symbol Z A #p #n #e charge Titanium 48Ti2+ 22 26 20 2+ Antimony 122Sb 51 122 71 Uranium 238U 92 238 146 Silver 108Ag 47 108 61 Fermium 257Fm 100 257 157 Platinum 195Pt 78 195 117 Krypton 84Kr 36 84

Homework Review 1. Equal , Z = #p 2. A = #p+#n 3. # protons OR atomic number OR Z 4. charge = #p – #e Show work for 5 and 6: (Mass)(Ab) + (Mass)(Ab) (Ab% in decimal form….move decimal 2 to left) 5. Li = 6.941 amu Agrees with Periodic Table 6. Ar = 39.947 amu Agrees with Periodic Table 7. 43.38% Na 8. 52.9% Al and 47.1 % O 9. 264 g carbon dioxide

Exit Slip - Homework Exit Slip: Clean up your lab space with a zero impact from when you came in. What’s Due? (Pending assignments to complete.) Beanium Lab Activity questions What’s Next? (How to prepare for the next day) Read Holt p84 - 88