Fun AQA Chemistry Guide: Atomic Structure & Cool Mixtures!

Open

leila

31/10/2022

Chemistry

summary of atomic structure

Subjects

Chemistry

Fun AQA Chemistry Guide: Atomic Structure & Cool Mixtures!

This AQA chemistry atomic structure study guide covers key concepts in atomic structure, the periodic table, and chemical reactions. It explores subatomic particles, atomic models, and trends in element properties.

Explains atomic structure, including protons, neutrons, and electrons
Discusses the development of atomic models from plum pudding to Bohr model
Covers periodic table organization and trends in reactivity and properties
Explores separating mixtures techniques and chemical formulas
Examines properties of element groups like noble gases, halogens, and alkali metals

31/10/2022

AQA chemistry
.
• atom = very
small
thing
element = single type of atom found on the periodic table
periodic table shows the range of the el

Chemical Formulas and Separating Mixtures

This page covers important chemical formulas to remember and introduces techniques for separating mixtures. It also discusses early atomic models, particularly the plum pudding model and its testing through the Rutherford-Marsden experiment.

Vocabulary: Distillation is a separating mixtures technique that uses differences in boiling points to separate components of a mixture.

Example: Common chemical formulas include CO₂ for carbon dioxide, H₂O for water, and NH₃ for ammonia.

Definition: Filtration is a separation method that uses a barrier to trap large particles while allowing smaller particles and liquids to pass through.

Highlight: The plum pudding model of the atom proposed a cloud of positive charge with negative electrons scattered throughout, which was later disproven by the Rutherford-Marsden experiment.

View

Atomic Models and the Periodic Table

This page discusses the development of atomic models, from Rutherford's nuclear model to Bohr's model. It also introduces the structure of the periodic table and the concept of ions.

Vocabulary: The period in the periodic table indicates the number of electron shells in an atom.

Example: Magnesium has 12 electrons, is in group 2, and period 3 of the periodic table.

Definition: Ions are atoms that have gained or lost electrons, resulting in a net electrical charge.

Highlight: The group number in the periodic table tells us how many electrons an element has in its outer shell.

Quote: "Rutherford = nucleus, Chadwick = neutrons, Bohr = current model"

View

Element Groups and Periodic Table History

This page explores different groups in the periodic table, including alkali metals, halogens, and noble gases. It also covers the historical development of the periodic table, from Newland's Law of Octaves to the modern arrangement based on electronic structure.

Vocabulary: Noble gases are elements in Group 0 of the periodic table that have a full outer electron shell.

Example: Helium is used in balloons, while neon is used in neon lights.

Definition: The transition metals are elements located in the central block of the periodic table.

Highlight: Mendeleev's periodic table was arranged by atomic mass and left gaps for undiscovered elements, predicting their properties.

View

Halogens and Alkali Metals

This page focuses on the properties and reactivity of halogens periodic table trends. It also discusses the characteristics of alkali metals and their reactions.

Vocabulary: Halogens are non-metallic elements in Group 7 of the periodic table that exist as diatomic molecules.

Example: Chlorine is used for sterilization purposes.

Definition: Reduction is a chemical process where an atom or ion gains electrons.

Highlight: The reactivity of halogens decreases as you move down Group 7, while their boiling points increase.

Quote: "Halogens want to gain 1 electron"

View

Metals and Transition Metals

This page covers the properties of metals, including alkali metals and transition metals. It discusses their reactivity, uses, and characteristic properties.

Vocabulary: An exothermic reaction is one that releases heat to its surroundings.

Example: Alkali metals react vigorously with water, producing metal hydroxides, heat, and hydrogen gas.

Definition: Transition metals are elements found in the central block of the periodic table, known for their ability to form colored compounds.

Highlight: Transition metals have various uses due to their properties, including jewelry making, electrical wiring, and cookware.

Quote: "Metal + oxygen → Metal oxide"

Can't find what you're looking for? Explore other subjects.

Knowunity is the #1 education app in five European countries

Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.

Download in

Google Play

Download in

App Store

Knowunity is the #1 education app in five European countries

4.9+

Average app rating

17 M

Pupils love Knowunity

#1

In education app charts in 17 countries

950 K+

Students have uploaded notes

Still not convinced? See what other students are saying...

iOS User

I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D

Philip, iOS User

The app is very simple and well designed. So far I have always found everything I was looking for :D

Lena, iOS user

I love this app ❤️ I actually use it every time I study.

Subjects

Chemistry

Fun AQA Chemistry Guide: Atomic Structure & Cool Mixtures!

leila

@leila_m

53 Followers

Explains atomic structure, including protons, neutrons, and electrons
Discusses the development of atomic models from plum pudding to Bohr model
Covers periodic table organization and trends in reactivity and properties
Explores separating mixtures techniques and chemical formulas
Examines properties of element groups like noble gases, halogens, and alkali metals

...

31/10/2022

Chemistry

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Chemical Formulas and Separating Mixtures

Vocabulary: Distillation is a separating mixtures technique that uses differences in boiling points to separate components of a mixture.

Example: Common chemical formulas include CO₂ for carbon dioxide, H₂O for water, and NH₃ for ammonia.

Definition: Filtration is a separation method that uses a barrier to trap large particles while allowing smaller particles and liquids to pass through.

Highlight: The plum pudding model of the atom proposed a cloud of positive charge with negative electrons scattered throughout, which was later disproven by the Rutherford-Marsden experiment.

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Atomic Models and the Periodic Table

This page discusses the development of atomic models, from Rutherford's nuclear model to Bohr's model. It also introduces the structure of the periodic table and the concept of ions.

Vocabulary: The period in the periodic table indicates the number of electron shells in an atom.

Example: Magnesium has 12 electrons, is in group 2, and period 3 of the periodic table.

Definition: Ions are atoms that have gained or lost electrons, resulting in a net electrical charge.

Highlight: The group number in the periodic table tells us how many electrons an element has in its outer shell.

Quote: "Rutherford = nucleus, Chadwick = neutrons, Bohr = current model"

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Element Groups and Periodic Table History

Vocabulary: Noble gases are elements in Group 0 of the periodic table that have a full outer electron shell.

Example: Helium is used in balloons, while neon is used in neon lights.

Definition: The transition metals are elements located in the central block of the periodic table.

Highlight: Mendeleev's periodic table was arranged by atomic mass and left gaps for undiscovered elements, predicting their properties.

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Halogens and Alkali Metals

This page focuses on the properties and reactivity of halogens periodic table trends. It also discusses the characteristics of alkali metals and their reactions.

Vocabulary: Halogens are non-metallic elements in Group 7 of the periodic table that exist as diatomic molecules.

Example: Chlorine is used for sterilization purposes.

Definition: Reduction is a chemical process where an atom or ion gains electrons.

Highlight: The reactivity of halogens decreases as you move down Group 7, while their boiling points increase.

Quote: "Halogens want to gain 1 electron"

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Metals and Transition Metals

This page covers the properties of metals, including alkali metals and transition metals. It discusses their reactivity, uses, and characteristic properties.

Vocabulary: An exothermic reaction is one that releases heat to its surroundings.

Example: Alkali metals react vigorously with water, producing metal hydroxides, heat, and hydrogen gas.

Definition: Transition metals are elements found in the central block of the periodic table, known for their ability to form colored compounds.

Highlight: Transition metals have various uses due to their properties, including jewelry making, electrical wiring, and cookware.

Quote: "Metal + oxygen → Metal oxide"

Sign up to see the content. It's free!

Access to all documents

Improve your grades

Join milions of students

By signing up you accept Terms of Service and Privacy Policy

Atomic Structure and the Periodic Table

This page introduces fundamental concepts in atomic structure and the periodic table. It defines key terms like atoms, elements, and compounds. The structure of an atom is illustrated, showing the nucleus containing protons and neutrons, surrounded by electron shells. An example of a balanced chemical equation is provided.

Vocabulary: An atom is defined as a very small particle that is the basic unit of matter.

Definition: The periodic table is a chart that organizes all known elements based on their properties and atomic structure.

Example: A balanced chemical equation for the decomposition of water: 2H₂O → 2H₂ + O₂

Highlight: The atomic number of an element represents the number of protons in its nucleus, while the mass number is the sum of protons and neutrons.

Can't find what you're looking for? Explore other subjects.

Knowunity is the #1 education app in five European countries

Knowunity has been named a featured story on Apple and has regularly topped the app store charts in the education category in Germany, Italy, Poland, Switzerland, and the United Kingdom. Join Knowunity today and help millions of students around the world.

Download in

Google Play

Download in

App Store

4.9+

Average app rating

17 M

Pupils love Knowunity

#1

In education app charts in 17 countries

950 K+

Students have uploaded notes

Still not convinced? See what other students are saying...

iOS User

I love this app so much, I also use it daily. I recommend Knowunity to everyone!!! I went from a D to an A with it :D

Philip, iOS User

The app is very simple and well designed. So far I have always found everything I was looking for :D

Lena, iOS user