Physical Science Chemistry Weekly Plans 2023/2024
4/29-5/3
Monday
Equilibrium & Le'Chatelier's practice
Tuesday
Review & practice
Practice quiz?
Wednesday
Test - Unit 4 part 1
HW check
HW - Read section 7.1
Monday
Notes - Unit conversions
Unit conversion practice
Tuesday
Video - Mole Ted Ed
Notes - The mole & molar mass
HW - molar mass worksheet --> Link
Monday
Equilibrium & Le'Chatelier's practice
Tuesday
Review & practice
Practice quiz?
Wednesday
Test - Unit 4 part 1
HW check
HW - Read section 7.1
Monday
Notes - Unit conversions
Unit conversion practice
Tuesday
Video - Mole Ted Ed
Notes - The mole & molar mass
HW - molar mass worksheet --> Link
4/22-4/26
Monday
Notes - Thermochemistry
HW - Thermo & Rates wkst --> Link
Tuesday
Notes - Reaction rates
Practice with reactions
Wednesday
Go over quiz
Rates demos
Thursday
Notes - Equilibrium
HW - Read/KTU section 7.5
Friday
Notes - LeChatelier's principle
HW - Equilibrium worksheet --> Link
Monday
Notes - Thermochemistry
HW - Thermo & Rates wkst --> Link
Tuesday
Notes - Reaction rates
Practice with reactions
Wednesday
Go over quiz
Rates demos
Thursday
Notes - Equilibrium
HW - Read/KTU section 7.5
Friday
Notes - LeChatelier's principle
HW - Equilibrium worksheet --> Link
4/15-4/19
Monday
Notes - Reaction types
HW - Reaction types & balancing (types portion) --> Link
Tuesday
Notes - Reaction types (predicting products)
Practice predicting products
Intro to reaction types lab
HW - Read/KTU sections 7.3/7.4
Wednesday
Lab - Reaction types
Thursday
Lab - Reaction types continued
Friday
Quiz - Balancing & reaction types
Monday
Notes - Reaction types
HW - Reaction types & balancing (types portion) --> Link
Tuesday
Notes - Reaction types (predicting products)
Practice predicting products
Intro to reaction types lab
HW - Read/KTU sections 7.3/7.4
Wednesday
Lab - Reaction types
Thursday
Lab - Reaction types continued
Friday
Quiz - Balancing & reaction types
4/8-4/12
Monday
ACT science section prep & practice
Tuesday
ACT day. Juniors only
Wednesday
Hand out objectives
Notes - Chemical reactions/equations intro
HW - Read/KTU sections 7.1/7.2
Thursday
Notes - How to balance chemical equations
Balancing practice
HW - Reaction types & balancing (balancing portion) --> Link
Friday
Go over unit 3 exam
More balancing practice
Monday
ACT science section prep & practice
Tuesday
ACT day. Juniors only
Wednesday
Hand out objectives
Notes - Chemical reactions/equations intro
HW - Read/KTU sections 7.1/7.2
Thursday
Notes - How to balance chemical equations
Balancing practice
HW - Reaction types & balancing (balancing portion) --> Link
Friday
Go over unit 3 exam
More balancing practice
4/1-4/5
Monday
Polar bonds & molecules practice
HW - Polar bonds worksheet --> Link
Tuesday
Quiz - Covalent bonding
Wednesday
Review for exam, finish homework
HW - Objective work
Thursday
Go over quiz
Review for exam
Friday
Test - Unit 3 exam
All unit 3 HW due
Monday
Polar bonds & molecules practice
HW - Polar bonds worksheet --> Link
Tuesday
Quiz - Covalent bonding
Wednesday
Review for exam, finish homework
HW - Objective work
Thursday
Go over quiz
Review for exam
Friday
Test - Unit 3 exam
All unit 3 HW due
3/25-3/29
Monday
Notes - Lewis structures
HW - Read/KTU section 6.2
Tuesday
Lewis structures continued
HW - Lewis structures wkst --> Link
Wednesday
Go over quiz
HW check (rescheduled from Friday)
More Lewis practice
Thursday
Notes - Polar covalent bonds and intermolecular attractions
Friday
No school
Monday
Notes - Lewis structures
HW - Read/KTU section 6.2
Tuesday
Lewis structures continued
HW - Lewis structures wkst --> Link
Wednesday
Go over quiz
HW check (rescheduled from Friday)
More Lewis practice
Thursday
Notes - Polar covalent bonds and intermolecular attractions
Friday
No school
3/18-3/22
Monday
Review/practice ionic bonding
Notes - Ionic naming rules
Tuesday
Ionic naming practice
HW - Naming worksheet --> Link
Wednesday
More ionic naming practice
Notes - Covalent naming
Thursday
Practice with covalent naming
Notes - Covalent bonding intro
HW - Mixed naming worksheet --> Link
Friday
Quiz - Ionic bonding
HW check
Monday
Review/practice ionic bonding
Notes - Ionic naming rules
Tuesday
Ionic naming practice
HW - Naming worksheet --> Link
Wednesday
More ionic naming practice
Notes - Covalent naming
Thursday
Practice with covalent naming
Notes - Covalent bonding intro
HW - Mixed naming worksheet --> Link
Friday
Quiz - Ionic bonding
HW check
3/11-3/15
Spring break
Spring break
3/4-3/8
Monday
Notes - Ionic formulas
HW - Ionic bonding wkst --> Link
Tuesday
Notes - Ionic/covalent properties
HW - Read/KTU section 6.1/6.3
Wednesday
Go over test
Intro to lab
Thursday
Lab - Ionic vs covalent compounds
Friday
Lab - Ionic vs covalent compounds
Monday
Notes - Ionic formulas
HW - Ionic bonding wkst --> Link
Tuesday
Notes - Ionic/covalent properties
HW - Read/KTU section 6.1/6.3
Wednesday
Go over test
Intro to lab
Thursday
Lab - Ionic vs covalent compounds
Friday
Lab - Ionic vs covalent compounds
2/26-3/1
Monday
Notes - Electronegativity, atomic radius, reactivity trends
HW - Periodic table review wkst --> Front Back
Tuesday
Go over quiz
Practice with periodicity
HW - Objective work
Wednesday
Finish homework
Review for exam
Thursday
Test - Unit 2 exam
HW check
Friday
Notes - Intro to bonding
Monday
Notes - Electronegativity, atomic radius, reactivity trends
HW - Periodic table review wkst --> Front Back
Tuesday
Go over quiz
Practice with periodicity
HW - Objective work
Wednesday
Finish homework
Review for exam
Thursday
Test - Unit 2 exam
HW check
Friday
Notes - Intro to bonding
2/19-2/23
Monday
No school
Tuesday
Notes - Periodic table organization & octet rule
Continue labeling PT
Wednesday
PT puzzle practice activity
HW - Finish PT puzzle
Thursday
Quiz - CFA 3.1/3.2
Notes - Intro to Coulomb's law
Friday
Notes - Coulomb's Law & Pull
Unit 2 exam end of next week!
Monday
No school
Tuesday
Notes - Periodic table organization & octet rule
Continue labeling PT
Wednesday
PT puzzle practice activity
HW - Finish PT puzzle
Thursday
Quiz - CFA 3.1/3.2
Notes - Intro to Coulomb's law
Friday
Notes - Coulomb's Law & Pull
Unit 2 exam end of next week!
2/12-2/16
Monday
Go over quiz (retake)
Study for unit 1 exam
Tuesday
Test - Unit 1 exam
All unit 1 HW due
All unit 1 retakes due
Wednesday
Video - Mendeleev's periodic table
Notes - History of the periodic table
HW - Read/KTU 5.2/5.3
Thursday
Notes - Metals vs nonmetals
Label blank PT
Friday
Go over exam
Unit 1 reflection
Monday
Go over quiz (retake)
Study for unit 1 exam
Tuesday
Test - Unit 1 exam
All unit 1 HW due
All unit 1 retakes due
Wednesday
Video - Mendeleev's periodic table
Notes - History of the periodic table
HW - Read/KTU 5.2/5.3
Thursday
Notes - Metals vs nonmetals
Label blank PT
Friday
Go over exam
Unit 1 reflection
2/5-2/9
Monday
Bohr practice
Notes - Dot diagrams
HW - Bohr atom wkst --> Link
Tuesday
Quiz - Atomic structure
Wednesday
Review for unit 1 exam
HW - Objective work
Thursday
Go over quiz
Review for unit 1 exam
Friday
Quiz - Atomic structure (retake)
HW check
Test - Unit 1 exam (early next week)
Monday
Bohr practice
Notes - Dot diagrams
HW - Bohr atom wkst --> Link
Tuesday
Quiz - Atomic structure
Wednesday
Review for unit 1 exam
HW - Objective work
Thursday
Go over quiz
Review for unit 1 exam
Friday
Quiz - Atomic structure (retake)
HW check
Test - Unit 1 exam (early next week)
1/29-2/2
Monday
Notes - Mass # vs atomic mass
Parts of atom practice
HW - Protons, neutrons, electrons worksheet --> Link
Tuesday
Lab safety contract
Lab tour
HW - Read/KTU section 4.3 --> Link
Wednesday
Lab - Flame testing
Thursday
Debrief flame test lab
Friday
Notes - The Bohr atomic model
Practice with Bohr atom
Monday
Notes - Mass # vs atomic mass
Parts of atom practice
HW - Protons, neutrons, electrons worksheet --> Link
Tuesday
Lab safety contract
Lab tour
HW - Read/KTU section 4.3 --> Link
Wednesday
Lab - Flame testing
Thursday
Debrief flame test lab
Friday
Notes - The Bohr atomic model
Practice with Bohr atom
1/22-1/26
Monday
Classification of matter practice
Notes - Physical & chemical changes
HW - Matter classification --> Link
Tuesday
Notes - Physical & chemical properties
HW - Read section 4.2
Wednesday
Wrap up mass, volume, density
Quiz - Matter classification (CFA 1.2)
HW check
Thursday
Notes - History & parts of the atom
Periodic table --> Link
HW - Protons, neutrons, electrons worksheet --> Link
Friday
Notes - Parts of the atom continued
Practice with parts of the atom --> Link
Intro to the Bohr atom
Monday
Classification of matter practice
Notes - Physical & chemical changes
HW - Matter classification --> Link
Tuesday
Notes - Physical & chemical properties
HW - Read section 4.2
Wednesday
Wrap up mass, volume, density
Quiz - Matter classification (CFA 1.2)
HW check
Thursday
Notes - History & parts of the atom
Periodic table --> Link
HW - Protons, neutrons, electrons worksheet --> Link
Friday
Notes - Parts of the atom continued
Practice with parts of the atom --> Link
Intro to the Bohr atom
1/15-1/19
Monday
MLK day
Tuesday
Snow day
Wednesday
Book checkout
Active reading strategy --> Link
HW - Read section 2.1
Matter classification intro
Thursday
Notes - Classification of matter
Friday
Classification of matter wrap up & practice
HW - Matter classification --> Link
Monday
MLK day
Tuesday
Snow day
Wednesday
Book checkout
Active reading strategy --> Link
HW - Read section 2.1
Matter classification intro
Thursday
Notes - Classification of matter
Friday
Classification of matter wrap up & practice
HW - Matter classification --> Link
1/8-1/12
Monday
Snow day
Tuesday
Snow day
Wednesday
Welcome & class expectations
HW - sign and return syllabus
Thursday
Academic effort discussion - How to be successful in chemistry class
Effort rubric --> Link
Hand out objectives
Friday
Snow day
Monday
Snow day
Tuesday
Snow day
Wednesday
Welcome & class expectations
HW - sign and return syllabus
Thursday
Academic effort discussion - How to be successful in chemistry class
Effort rubric --> Link
Hand out objectives
Friday
Snow day
Semester 1
12/18-12/22
Monday
Final exam review
Tuesday
Go over unit exam
Final exam review
Wednesday
Finals periods 1,2,3
Thursday
Finals periods 0,4,5
Friday
Finals periods 6,7
Monday
Final exam review
Tuesday
Go over unit exam
Final exam review
Wednesday
Finals periods 1,2,3
Thursday
Finals periods 0,4,5
Friday
Finals periods 6,7
12/11-12/15
Monday
Stoichiometry practice continued
HW - Stoichiometry practice --> Link (from Friday)
Tuesday
Quiz - Mole & stoichiometry
Wednesday
Notes - States of matter & phase changes
Thursday
Go over quiz
Review for exam
Friday
Test - Mole & stoichiometry
HW check
Monday
Stoichiometry practice continued
HW - Stoichiometry practice --> Link (from Friday)
Tuesday
Quiz - Mole & stoichiometry
Wednesday
Notes - States of matter & phase changes
Thursday
Go over quiz
Review for exam
Friday
Test - Mole & stoichiometry
HW check
12/4-12/8
Monday
Notes - Unit conversions
HW - Read section 7.1
Tuesday
Video - Mole Ted Ed
Notes - The mole & molar mass
HW - molar mass worksheet --> Link
Wednesday
Go over exam
Practice with unit conversions & moles
Thursday
Notes - Intro to stoichiometry
Create mole map
Friday
Stoichiometry practice
HW - Stoichiometry practice --> Link
Monday
Notes - Unit conversions
HW - Read section 7.1
Tuesday
Video - Mole Ted Ed
Notes - The mole & molar mass
HW - molar mass worksheet --> Link
Wednesday
Go over exam
Practice with unit conversions & moles
Thursday
Notes - Intro to stoichiometry
Create mole map
Friday
Stoichiometry practice
HW - Stoichiometry practice --> Link
11/27-12/1
Monday
Notes - Equilibrium
HW - Read/KTU section 7.5
Tuesday
Notes - LeChatelier's principle
HW - Equilibrium worksheet -->
Wednesday
Go over reactions quiz
LeChatelier's practice
Thursday
Equilibrium practice
Review for twiz
Friday
Twiz - Chemical reactions
Monday
Notes - Equilibrium
HW - Read/KTU section 7.5
Tuesday
Notes - LeChatelier's principle
HW - Equilibrium worksheet -->
Wednesday
Go over reactions quiz
LeChatelier's practice
Thursday
Equilibrium practice
Review for twiz
Friday
Twiz - Chemical reactions
11/20-11/24
Monday
Reaction rates demo & practice
Go over quiz
Practice with chemical equations
Tuesday
Quiz - Reactions (again)
HW check
Wednesday
No school
Thursday
No school
Friday
No school
Monday
Reaction rates demo & practice
Go over quiz
Practice with chemical equations
Tuesday
Quiz - Reactions (again)
HW check
Wednesday
No school
Thursday
No school
Friday
No school
11/13-11/17
Monday
Lab - Reaction types
HW - Read/KTU sections 7.3/7.4
Tuesday
Lab - Reaction types
Wednesday
Debrief lab
Notes - Thermochemistry
HW - Thermo & Rates wkst --> Link
Thursday
Notes - Reaction rates
Practice with reactions
Rates demos
Friday
Quiz - Chemical reactions
HW check
Monday
Lab - Reaction types
HW - Read/KTU sections 7.3/7.4
Tuesday
Lab - Reaction types
Wednesday
Debrief lab
Notes - Thermochemistry
HW - Thermo & Rates wkst --> Link
Thursday
Notes - Reaction rates
Practice with reactions
Rates demos
Friday
Quiz - Chemical reactions
HW check
11/6-11/10
Monday
Hand out objectives
Notes - Chemical reactions intro
HW - Read/KTU sections 7.1/7.2
Tuesday
Notes - How to balance chemical equations
Balancing practice
HW - Reaction types & balancing (balancing portion) --> Link
Wednesday
Go over unit 3 exam
Notes - Reaction types intro
Thursday
Notes - Reaction types (predicting products)
HW - Reaction types & balancing (types portion) --> Link
Friday
Practice predicting products
Intro to reaction types lab
Monday
Hand out objectives
Notes - Chemical reactions intro
HW - Read/KTU sections 7.1/7.2
Tuesday
Notes - How to balance chemical equations
Balancing practice
HW - Reaction types & balancing (balancing portion) --> Link
Wednesday
Go over unit 3 exam
Notes - Reaction types intro
Thursday
Notes - Reaction types (predicting products)
HW - Reaction types & balancing (types portion) --> Link
Friday
Practice predicting products
Intro to reaction types lab
10/30-11/3
Monday
Notes - Polar covalent bonds and intermolecular attractions
Hand out electronegativity periodic table
Practice with polarity
HW - Polar bonds wkst -->
Tuesday
More polarity practice
Debrief ionic/covalent lab
Review for exam
Wednesday
Review continued
Thursday
Pre-ACT day (sophomores only)
Friday
Test - Unit 3 exam
All unit 3 HW due
Monday
Notes - Polar covalent bonds and intermolecular attractions
Hand out electronegativity periodic table
Practice with polarity
HW - Polar bonds wkst -->
Tuesday
More polarity practice
Debrief ionic/covalent lab
Review for exam
Wednesday
Review continued
Thursday
Pre-ACT day (sophomores only)
Friday
Test - Unit 3 exam
All unit 3 HW due
10/23-10/27
Monday
Ionic vs covalent video
Notes - Ionic/covalent/metallic properties
Tuesday
Quiz - Covalent bonding
HW check
Intro to lab
Wednesday (in S329)
Lab - Ionic vs covalent
HW - Objective work
Thursday (in S329)
Lab - Ionic vs covalent
HW - Finish lab
Friday
Go over quiz
Review for unit 3 exam (next week)
Monday
Ionic vs covalent video
Notes - Ionic/covalent/metallic properties
Tuesday
Quiz - Covalent bonding
HW check
Intro to lab
Wednesday (in S329)
Lab - Ionic vs covalent
HW - Objective work
Thursday (in S329)
Lab - Ionic vs covalent
HW - Finish lab
Friday
Go over quiz
Review for unit 3 exam (next week)
10/16-10/20
Monday
Fall break
Tuesday
Fall break
Wednesday
Lab safety review & S329 lab tour
Review covalent bonding (Khan video)
Notes - Lewis stuctures
HW - Read/KTU section 6.2
Thursday
Lewis structures continued
HW - Lewis structures wkst --> Link
Friday
Go over quiz
More Lewis practice
Monday
Fall break
Tuesday
Fall break
Wednesday
Lab safety review & S329 lab tour
Review covalent bonding (Khan video)
Notes - Lewis stuctures
HW - Read/KTU section 6.2
Thursday
Lewis structures continued
HW - Lewis structures wkst --> Link
Friday
Go over quiz
More Lewis practice
10/9-10/13
Monday
Notes - Ionic naming rules
Tuesday
Ionic naming practice
HW - Naming worksheet --> Link
Wednesday
Go over unit 2 exam
More ionic naming practice
Notes - Covalent naming
Thursday
Practice with covalent naming
Notes - Covalent bonding intro
Friday
Quiz - Ionic bonding
Monday
Notes - Ionic naming rules
Tuesday
Ionic naming practice
HW - Naming worksheet --> Link
Wednesday
Go over unit 2 exam
More ionic naming practice
Notes - Covalent naming
Thursday
Practice with covalent naming
Notes - Covalent bonding intro
Friday
Quiz - Ionic bonding
10/2-10/6
Monday
Review for unit 2 exam
HW - Objective work
Tuesday
Go over quiz
More review
Wednesday
Test - Unit 2
All unit 2 homework due
Thursday
Notes - Intro to chemical bonding
HW - Read/KTU section 6.1/6.3
Friday
Notes - Ionic names/formulas
HW - Ionic bonding practice -->
Monday
Review for unit 2 exam
HW - Objective work
Tuesday
Go over quiz
More review
Wednesday
Test - Unit 2
All unit 2 homework due
Thursday
Notes - Intro to chemical bonding
HW - Read/KTU section 6.1/6.3
Friday
Notes - Ionic names/formulas
HW - Ionic bonding practice -->
9/25-9/29
Monday
Debrief PT puzzle activity
Notes - Coulomb's law & Pull
HW - Finish PT puzzle --> Link
Tuesday
Notes - Electronegativity, atomic radius, reactivity trends
Wednesday
Practice with periodicity
HW - Periodic table review wkst --> Front Back
Thursday
Moving day!
Friday
Quiz - Periodic table
HW check
Monday
Debrief PT puzzle activity
Notes - Coulomb's law & Pull
HW - Finish PT puzzle --> Link
Tuesday
Notes - Electronegativity, atomic radius, reactivity trends
Wednesday
Practice with periodicity
HW - Periodic table review wkst --> Front Back
Thursday
Moving day!
Friday
Quiz - Periodic table
HW check
9/18-9/22
Monday
Video - Mendeleev's periodic table
Notes - History of the periodic table
HW - Read/KTU 5.2/5.3
Tuesday
Notes - Metals vs nonmetals
Label blank PT
Wednesday
Notes - Periodic table organization
Continue labeling PT
Thursday
Go over exam
Unit 1 reflection
Friday
Periodic table puzzle
Monday
Video - Mendeleev's periodic table
Notes - History of the periodic table
HW - Read/KTU 5.2/5.3
Tuesday
Notes - Metals vs nonmetals
Label blank PT
Wednesday
Notes - Periodic table organization
Continue labeling PT
Thursday
Go over exam
Unit 1 reflection
Friday
Periodic table puzzle
9/11-9/15
Monday
Review for unit 1 exam
HW - Objective work
Tuesday
Go over quiz
Review for unit 1 exam
Wednesday
Quiz - Parts of atom (retake!)
Thursday
Go over retake quiz
Review for exam
HW - Study for exam!
Friday
Test - Unit 1 exam
Monday
Review for unit 1 exam
HW - Objective work
Tuesday
Go over quiz
Review for unit 1 exam
Wednesday
Quiz - Parts of atom (retake!)
Thursday
Go over retake quiz
Review for exam
HW - Study for exam!
Friday
Test - Unit 1 exam
9/4-9/8
Monday
Labor day
Tuesday
Bohr model practice
HW - Bohr atom wkst --> Link
Wednesday
Limitations of Bohr atom
Notes - Valence electrons & Lewis dot diagrams
Thursday
Review for quiz
Review for exam
Friday
Quiz - Atomic structure
HW check
Unit 1 exam next week
Monday
Labor day
Tuesday
Bohr model practice
HW - Bohr atom wkst --> Link
Wednesday
Limitations of Bohr atom
Notes - Valence electrons & Lewis dot diagrams
Thursday
Review for quiz
Review for exam
Friday
Quiz - Atomic structure
HW check
Unit 1 exam next week
8/28-9/1
Monday
Mass # vs atomic mass
Parts of atom practice
HW - Protons, neutrons, electrons worksheet --> Link
Tuesday
More parts of atom practice
Go over quiz
HW - Read/KTU section 4.3 --> Link
Wednesday
Lab safety contract
Lab tour
Intro to flame testing & spectroscopy
Thursday
Lab - Flame testing
Friday
Notes - The Bohr atomic model
Practice with Bohr atom
Monday
Mass # vs atomic mass
Parts of atom practice
HW - Protons, neutrons, electrons worksheet --> Link
Tuesday
More parts of atom practice
Go over quiz
HW - Read/KTU section 4.3 --> Link
Wednesday
Lab safety contract
Lab tour
Intro to flame testing & spectroscopy
Thursday
Lab - Flame testing
Friday
Notes - The Bohr atomic model
Practice with Bohr atom
8/21-8/25
Monday
Classification of matter wrap up & practice
HW - Matter classification --> Link
Tuesday
Notes - Physical & chemical properties
HW - Read section 4.2
Wednesday
Notes - History & parts of the atom
Periodic table --> Link
HW - Protons, neutrons, electrons worksheet --> Link (reassigned for next week)
Thursday
Notes - Parts of the atom continued
Practice with parts of the atom --> Link
Intro to the Bohr atom
Friday
Quiz - Matter classification and parts of the atom
HW check
Monday
Classification of matter wrap up & practice
HW - Matter classification --> Link
Tuesday
Notes - Physical & chemical properties
HW - Read section 4.2
Wednesday
Notes - History & parts of the atom
Periodic table --> Link
HW - Protons, neutrons, electrons worksheet --> Link (reassigned for next week)
Thursday
Notes - Parts of the atom continued
Practice with parts of the atom --> Link
Intro to the Bohr atom
Friday
Quiz - Matter classification and parts of the atom
HW check
8/14-8/18
Monday
9th Grade Orientation
Tuesday
Welcome & class expectations
HW - sign and return syllabus
Wednesday
Academic effort discussion - How to be successful in chemistry class
Effort rubric --> Link
Hand out objectives
Thursday
Book checkout
Active reading strategy --> Link
HW - Read section 2.1
Matter classification intro
Friday
Notes - Classification of matter
Monday
9th Grade Orientation
Tuesday
Welcome & class expectations
HW - sign and return syllabus
Wednesday
Academic effort discussion - How to be successful in chemistry class
Effort rubric --> Link
Hand out objectives
Thursday
Book checkout
Active reading strategy --> Link
HW - Read section 2.1
Matter classification intro
Friday
Notes - Classification of matter