Elements of the sea What do we think about with the title elements of the sea? Remember were in...

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Elements of the sea What do we think about with the title elements of the sea? Remember we’re in chemistry

Transcript of Elements of the sea What do we think about with the title elements of the sea? Remember were in...

Page 1: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Elements of the sea

What do we think about with the title elements of the sea?

Remember we’re in chemistry

Page 2: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Atoms and Ions

Ions in solution

Group 7

Manufacturing

Dipoles

Bonding

Halogenoalkanes

Elements of the sea

Ionic Formulae

Page 3: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Content

Process

Benefit

• Ionic solids• Concentrations in solution• Precipitation reaction

• Demo an reaction• Calculations

• Understand how particles interact

Page 4: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

What is an ion?• A charged particle

• If positive they are called ?• How do they become positive?• If negative they are called?• How do they become negative?• Draw an ionic structure (label it)• How are they held together?

Page 5: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

What is an ion?• A charged particle

• If positive they are called ? Cation• How do they become positive? Lose an e-• If negative they are called? Anion• How do they become negative? Gain an e-• Draw an ionic structure (ionic lattice)• How are they held together?

Electrostatic forces

Page 6: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Ionic Lattice

Ions in solution

Page 7: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Precipitation reaction

• Creating a solid • Ions that are not involved in the reaction

(spectator ion) can be removed• Summarise into ......

• Ionic equation – state symbols important!• Ionic precipitation

Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq)

AgCl(s) + Na+(aq) + NO3-(aq)

Ag+(aq) + Cl-(aq)

AgCl(s)

Page 8: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Precipitation reaction• Rules for ionic precipitation (learn)

• All nitrates are soluble

• All chlorides; except AgCl and PbCl2

• Most sulfates are soluable except for BaSO4, PbSO4 and SrSO4

• All Na/K/NH4+ salts are soluble

• All carbonates are insoluble (except NH4+ + gp 1 elements)

• Ions that are not involved in the reaction (spectator ion)• Summarise into ......

• Ionic equation – state symbols important!• Ionic precipitation

Page 9: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Solution Concentration• Concentration = Conc. (gdm-3)

(moldm-3) molar mass ( gmol-1)

• No. of moles = Conc. (moldm-3) x Vol (dm-

3)

n

c v

n= moles (mol)c= conc. (moldm-3)V= vol (dm-3)

1000 cm3=1dm3

Page 10: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Chemical Ideas 1.5• Concentration = Conc. (gdm-3)

(moldm-3) molar mass ( gmol-1)

• No. of moles = Conc. (moldm-3) x Vol (dm-

3)

n

c v

n= moles (mol)c= conc. (moldm-3)V= vol (dm-3)

1000 cm3=1dm3

Page 11: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Try this – table vs tableNaOH - which goes

where?

Make up your own card sort of a compound – with at least 3 concentrations/volumes/moles

Page 12: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Exam question

Make up your own card sort of a compound – with at least 3 different concentrations/volumes + moles

Page 13: Elements of the sea What do we think about with the title elements of the sea? Remember were in chemistry.

Best Choice – Salters A level / ES Formula, equations, amount / Concentration

Finish CI1.5CI5.1

CS ES1